NEW POWER - analog.com · Visit analog.com and linear.com December 2017 NEW POWER MANAGEMENT PRODUCTS LTC2992 Dual Wide Range Power Monitor LT3964 Dual 36V Synchronous 1.6A Buck LED

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December 2017

NEW POWER MANAGEMENT PRODUCTS

LTC2992 Dual Wide Range Power Monitor

LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C

LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC μModule Regulator

LT8362 Low IQ Boost/SEPIC/Inverting Converter with 2A, 60V Switch

LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2μA Quiescent Current

Contents

Ideal Diodes

LTC®4418 Dual Channel Prioritized PowerPath™ Controller ................................................................................................................................1

LT®8672 Active Rectifier Controller with Reverse Protection ...............................................................................................................................2

Power Monitor

LTC2992 Dual Wide Range Power Monitor ..........................................................................................................................................................4

LED Drivers

LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C ...........................................................................................................................5

µModule® Regulators

LTM®4645 25A DC/DC Step-Down µModule Regulator ........................................................................................................................................6

LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator .....................................................................................7

LTM8063 40VIN, 2A Silent Switcher® µModule Regulator ....................................................................................................................................9

LTM8065 40VIN, 2.5A Silent Switcher µModule Regulator .................................................................................................................................10

Switching Regulators—Monolithic

LT8362 Low IQ Boost/SEPIC/Inverting Converter with 2A, 60V Switch ..............................................................................................................11

LT8603 42V, Low IQ, Quad Output Triple Monolithic Buck Converter and Boost Controller ...............................................................................12

LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current .....................................................14

Switching Regulators—Controllers

LTC3779 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller ......................................................................................................15

LTC3874-1 PolyPhase® Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing ................................................................16

LT8391A 60V 2MHz Synchronous 4-Switch Buck-Boost LED Driver Controller ................................................................................................17

LT8711 Micropower Synchronous Multitopology Controller with 42V Input Capability .....................................................................................18

Design Notes

DN567 60V 2MHz Buck-Boost Controllers Regulate High Power Voltage and Current with High Efficiency and Low EMI

DN569 Cool Running, 144W, 4 × 40A µModule POL Regulator

All registered trademarks and trademarks are the property of their respective owners.

1

FEATURES DESCRIPTION

Ideal Diodes

n Selects Highest Priority Supply from Two Inputs n Blocks Reverse and Cross Conduction Currents n Wide Operating Voltage Range: 2.5V to 40V n –42V Protection Against Reverse Connection n 60V Tolerant V1, V2 Inputs n Adjustable Input Validation Time n Fast Switchover Minimizes Output Voltage Droop n Low 26µA Operating Current n ±1.5% Input Overvoltage/Undervoltage Protection n Adjustable Overvoltage/Undervoltage Hysteresis n Cascadable for Additional Input Supplies n 20-Lead 4mm × 4mm QFN Package

n Industrial Handheld Instruments n High Availability Systems n Battery Backup Systems n Servers and Computer Peripherals

APPLICATIONS

LTC4418 Dual Channel Prioritized PowerPath Controller

The LTC4418 connects one of two valid power supplies to a common output based on priority and validity. Priority is defined by pin assignment, with V1 assigned the higher priority and V2 the lower priority. A power supply is defined as valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least the configured validation time. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected and the other valid input is connected to the common output. Multiple LTC4418s, as well as triple channel LTC4417s, can be cascaded to provide switchover between more than two inputs.

The LTC4418 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled soft-start feature minimizes start-up inrush current. Open drain VALID outputs indicate the input supplies have been within their OV/UV window for the duration of the validation time. The validation time can be disabled or adjusted using an external capacitor.

V2

UV2

OV2

LTC4418

4418 TA01a

VS1 G1 VS2 G2

1M

100nF

60.4k

226k

1M

33.2k

78.7k

470nF BAT46WJ

M3 M4

47nF

698Ω

100k

82µF

1.25AMAX OUTPUT

V1

UV1

OV1

CAS

INTVCC

EN

SHDN

+FDS4465

M1 M2FDS44655V SYS

12V WALLADAPTER

GND HYS

255k

TMR

1nF 100nF

100k

VALID1

VALID2

VOUT

Priority Switching from V1 to V2

VOUT

5V

13.8V

2ms/DIV

ILOAD = 1.25ACOUT = 82µF

V12V/DIV

V22V/DIV

4418 TA01b

UF PACKAGE 20-LEAD (4mm × 4mm) PLASTIC QFN

LTC4418CUF LTC4418IUF

20 19 18 17 16

6 7 8

TOP VIEW

GND21

UF PACKAGE20-LEAD (4mm × 4mm) PLASTIC QFN

9 10

5

4

3

2

1

11

12

13

14

15TMR

UV1

OV1

UV2

OV2

VOUT

VS1

G1

VS2

G2

HYS

SHDN

EN V1 V2

VALID1

VALID2

GND

CAS

INTV

CC

2

FEATURES DESCRIPTION n Reverse Input Protection to –40V n Improved Performance Compared to a Schottky Diode: n Reduce Power Dissipation by >90% n Reduce Drop to 20mV

n Ultrafast Transient Response n Rectifies 6VP-P Up to 50kHz n Rectifies 2VP-P Up to 100kHz

n Wide Operating Voltage Range: 3V to 42V n Low 20µA Quiescent Current in Operation n Low 3.5µA Shutdown Current n Accurate 1.21V Enable Pin Threshold n Available in Small 10-Lead MSOP

n Automotive Battery Protection n Industrial Supplies n Portable Instrumentation

The LT8672 is an active rectifier controller for reverse input protection. It drives an external N-channel MOSFET to replace a power Schottky diode. Its very low quiescent current and fast transient response meet the tough requirements in automotive applications where AC input signals of up to 100kHz are present. These signals are rectified with minimum power dissipation on the external FET, simplifying thermal management on the PCB.

With a drop of only 20mV, the LT8672 solution eases the minimum input voltage requirement during cold crank and start-stop, allowing simpler and more efficient circuits. If the input power source fails or is shorted, a fast turn-off minimizes reverse current transients. An available shutdown mode reduces the quiescent current to 3.5μA.

An integrated auxiliary boost regulator provides the required boost voltage to turn the external FET fully on. A power good pin signals when the external FET is ready to take load current.

APPLICATIONS

LT8672 Active Rectifier Controller with Reverse Protection

Ideal Diodes

12V, 5A Automotive Reverse Battery Protection

IPD100N06S4-03

1μF 100μHSMBJ33A33V

SMBJ15A15V

8672 TA01a

VOUT5A

VBATT12V

4.7µF+

470µF

TO SYSTEM LOADS

OFFON

SOURCE GATE DRAIN AUXSWAUX

PG

GND

EN/UVLO

LT8672

Rectification of Input Ripple

VOUT2V/DIV

500µs/DIV

VBATT2V/DIV

8672 TA01b

MS PACKAGE 10-LEAD PLASTIC MSOP

LT8672EMS LT8672IMSLT8672HMS

12345

EN/UVLOGND

PGGND

NC

109876

GATESOURCEDRAINAUXAUXSW

TOP VIEW

MS PACKAGE10-LEAD PLASTIC MSOP

The LTC®2944 measures battery current, charge, voltage and internal temperature via an I2C interface. A precision coulomb counter integrates current to determine charge. Features include programmable limit thresholds and alerts. The LTC2944 provides useful measurements for any battery chemistry and capacity.

Measure Charge, Voltage, Current and Temperature with 1% Accuracy

, LT, LTC, LTM, Linear Technology, the Linear logo, and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.

Features

• Measures Accumulated Battery Charge

• 3.6V to 60V Operating Range for Multicell Applications

• 14-Bit ADC Measures Voltage, Current and Temperature

• 1% Charge, Voltage, Current Accuracy

• I2C/SMBus Interface

• Configurable Alert Output/Charge Complete Input

• Quiescent Current <150µA

• 8-Pin 3mm x 3mm DFN Package

www.linear.com/product/LTC2944

1-800-4-LINEAR

Battery Monitors

Part Number

LTC2941LTC2941-1LTC2942LTC2942-1LTC2943LTC2943-1LTC2944LTC4150

PackageMeasures:

Q V I T2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V3.6V to 20V3.6V to 20V3.6V to 60V2.7V to 8.5V

2mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-63mm x 3mm DFN-83mm x 3mm DFN-83mm x 3mm DFN-8

MSOP-10

1A

1A

1A

••••••••

•••••

•••

•••••

OperatingRange

Internal SenseResistor

High Voltage Battery Monitor

LTC2944

3.6V to60V

CHARGE

CURRENT

VOLTAGE

TEMP

1 9 5 4 Ah

Find your local sales office: www.linear.com/contact

The LTC®2944 measures battery current, charge, voltage and internal temperature via an I2C interface. A precision coulomb counter integrates current to determine charge. Features include programmable limit thresholds and alerts. The LTC2944 provides useful measurements for any battery chemistry and capacity.

Measure Charge, Voltage, Current and Temperature with 1% Accuracy


Features

• Measures Accumulated Battery Charge

• 3.6V to 60V Operating Range for Multicell Applications

• 14-Bit ADC Measures Voltage, Current and Temperature

• 1% Charge, Voltage, Current Accuracy

• I2C/SMBus Interface

• Configurable Alert Output/Charge Complete Input

• Quiescent Current <150µA

• 8-Pin 3mm x 3mm DFN Package

www.linear.com/product/LTC2944

1-800-4-LINEAR

Battery Monitors

Part Number

LTC2941LTC2941-1LTC2942LTC2942-1LTC2943LTC2943-1LTC2944LTC4150

PackageMeasures:

Q V I T2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V2.7V to 5.5V3.6V to 20V3.6V to 20V3.6V to 60V2.7V to 8.5V

2mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-62mm x 3mm DFN-63mm x 3mm DFN-83mm x 3mm DFN-83mm x 3mm DFN-8

MSOP-10

1A

1A

1A

••••••••

•••••

•••

•••••

OperatingRange

Internal SenseResistor

High Voltage Battery Monitor

LTC2944

3.6V to60V

CHARGE

CURRENT

VOLTAGE

TEMP

1 9 5 4 Ah


4

FEATURES DESCRIPTION n Rail-to-Rail Input Range: 0V to 100V n Wide Input Supply Range: 2.7V to 100V n Measures Current, Voltage and Power n Shunt Regulator for Supplies >100V n 8-/12-Bit ADCs with Less Than ±0.3% Total Unadjusted Error n Four General Purpose Inputs/Outputs Configurable as ADC Inputs

n Continuous Scan and Snapshot Modes n Stores Minimum and Maximum Measurements n Alerts When Alarm Thresholds Exceeded n Shutdown Mode with IQ < 50μA n Split SDA Pin Eases Opto-Isolation n Available in 16-Lead 4mm × 3mm DFN and MSOP Packages

n Telecom Infrastructure n Industrial Equipment n Automotive n Computer Systems and Servers

The LTC2992 is a rail-to-rail system monitor that measures current, voltage and power of two supplies. It features an operating range of 2.7V to 100V and includes a shunt regulator for supplies above 100V. The voltage measurement range of 0V to 100V is independent of the input supply. Two ADCs simultaneously measure each supply’s current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply’s current and power is added for total system consumption. Minimum and maximum values are stored and an overrange alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I2C interface. Shutdown mode reduces current consumption to 25μA typically.

The LTC2992 I2C interface includes separate data input and output pins for use with standard or opto-isolated I2C connections. The LTC2992-1 has an inverted data output for use with inverting opto-isolator configurations.

APPLICATIONS

LTC2992 Dual Wide Range Power Monitor


LTC2992CMS LTC2992IMSTC2992HMS


LTC2992CMS-1 LTC2992IMS-1TC2992HMS-1

DE PACKAGE 16-LEAD (4mm × 3mm) PLASTIC DFN

LTC2992CDE LTC2992IDETC2992HDE

DE PACKAGE 16-LEAD (4mm × 3mm) PLASTIC DFN

LTC2992CDE-1 LTC2992IDE-1TC2992HDE-1

Power Monitor

ADC Error (GPIO)

12-BIT MODE

TYPICAL

CODE0 1024 2048 3072 4096

–0.50

–0.25

0

0.25

0.50AD

C ER

ROR

(%)

2992 TA01b

MAX ERROR

161514131211109

17

12345678

SENSE2–

SENSE2+

GPIO2GPIO4GNDSDAOSDAISCL

SENSE1–

SENSE1+

GPIO1GPIO3ADR1ADR0

INTVCCVDD

TOP VIEW

DE PACKAGE16-LEAD (4mm × 3mm) PLASTIC DFN

161514131211109

17

12345678

SENSE2–

SENSE2+


SENSE1–

SENSE1+

GPIO1GPIO3ADR1ADR0

INTVCCVDD

TOP VIEW

DE PACKAGE16-LEAD (4mm × 3mm) PLASTIC DFN

12345678

SENSE1–

SENSE1+

GPIO1GPIO3ADR1ADR0

INTVCCVDD

161514131211109

SENSE2–

SENSE2+


TOP VIEW


12345678

SENSE1–

SENSE1+

GPIO1GPIO3ADR1ADR0

INTVCCVDD

161514131211109

SENSE2–

SENSE2+


TOP VIEW


Dual Wide Range Power Monitor

VDD

LTC2992SDAI

SDAO

SCLGPIO4

GPIO1

GPIO2

VIN13V TO 100V

I2CINTERFACE

VIN20V TO 100V

0.01Ω

ALERT

2992 TA01a

SENSE2+ SENSE2–SENSE1+ SENSE1–

0.01Ω

0.1μF

ADR0 ADR1GNDINTVCC

GPIO3 DATAREADY

MEASUREDVOLTAGE 2

MEASUREDVOLTAGE 1

VOUT1

VOUT2

5

FEATURES DESCRIPTION n Wide Input Voltage Range: 4V to 36V n Two Independent 1.6A/40V Synchronous Bucks n I2C Interface for Internal True Color PWM™ Dimming (8192:1), Analog Dimming and Fault Reporting

n 1000:1 External True Color PWM Dimming and 10:1 External Analog Dimming

n PMOS Switch Driver for PWM and Output Disconnect n ±3% Constant Current Regulation n Adjustable Frequency: 200kHz to 2MHz n Frequency Synchronization with Clock Output n Programmable OPENLED Protection with Reporting n Short-Circuit Protection with Reporting n Programmable Undervoltage Lockout with Hysteresis n Internal Compensation n Nine Unique Device Addresses for I2C n Available in 5mm × 6mm 36-Lead QFN Package

n General Purpose, Industrial, Medical and Automotive Lighting

n Constant-Current, Constant-Voltage Source

The LT3964 is a dual synchronous step-down DC/DC converter with I2C interface designed to operate as a constant-current and constant-voltage source and is ideal for driving LEDs. The fixed frequency and peak current mode topology result in stable operation over a wide range of supply and output voltages. The ground referred voltage FB pin serves as the input for several LED protection features, and also allows the converter to operate as a constant-voltage source. The maximum output current is set by an external resistor, and the output current amplifier has a rail-to-rail common mode range. LT3964 uses an I2C interface to communicate with a microcontroller to read LED faults, write PWM and analog dimming registers and set fault masking. The I2C PWM input provides LED dimming ratios up to 8192:1. The I2C programmable CTRL register sets the gain of the external CTRL pin, and maximum current sense threshold, providing additional analog dimming capability.

APPLICATIONS

LT3964 Dual 36V Synchronous 1.6A Buck LED Driver with I2C

UHE PACKAGE 36-LEAD (5mm × 6mm) PLASTIC QFN

LT3964EUHE LT3964IUHELT3964HUHE

Protected by U.S. Patents, including 7199560, 7321203, 7746300.

50W Dual Buck 1A LED Driver

Efficiency, VIN = 34V

LED Driver

ILED (mA)100 200 300 400 500 600 700 800 900 1000

70

75

80

85

90

95

100

EFFI

CIEN

CY (%

)

IN

3964 TA01b

BOTH CHANNELS ARE ON

11 12 13 14

TOP VIEW

37PGND

UHE PACKAGE36-LEAD (5mm × 6mm) PLASTIC QFN

15 16 17 18

36 35 34 33 32 31 30 29

21

22

23

24

25

26

27

28

8

7

6

5

4

3

2

1RT

CTRL1

CTRL2

EN/UVLO

INTVCC

ALERT

PWM1

PWM2

SDA

SCL

ISP1

ISN1

PWMTG1

SGND

FB1

FB2

SGND

PWMTG2

ISN2

ISP2

SYNC

/CLK

OUT

T SET

V IN1

V IN1

NC SW1

SW1

BST1

ADDR

2

ADDR

1

V IN2

V IN2 NC

SW2

SW2

BST2

20

19

9

10 10µH

0.22µF

1M

100mΩ

2.2µF

43.2k

2.2µF

100k

3.92k

499k

165k

100k2.2µF

27.4k

2.2µF

BST1

LT3964

SW1

VIN1

ISP1ISN1

PWMTG1

CTRL1

BST2

SW2

ISP2ISN2

PWMTG2

GND

EN/UVLO

CTRL2

PWM1PWM2

PWM1PWM2

INTVCC

ALERT

VIN2

GND

TSETRT

SCLSDA

2-WIREI2C INTERFACE

ADDR1 ADDR2

SYNC/CLKOUT2MHz

INTVCC

INTVCC

INTVCC

FB1

FB2

10µH

0.22µF

1M

100mΩ

2.2µF

43.2k

1A, 8 LEDsUP TO26V

1A, 8 LEDsUP TO26V

10µF×2

31V TO 36V(ENABLED AT 33V,

SHUTDOWN AT 31V)

3964 TA01a

6

FEATURES DESCRIPTION n 4.7V to 15V Input Voltage Range n 0.6V to 1.8V Output Voltage Range n 25A DC Output Current n ±1.2% Total DC Output Voltage Error (–40°C to 125°C) n High Reliability N + 1 Phase Redundancy Supported n Internal or External Control Loop Compensation n Differential Remote Sense Amplifier for Precision Regulation n Current Mode Control/Fast Transient Response n Multiphase Current Sharing Up to 150A n Built-In Temperature Monitoring n Selectable Pulse-Skipping, Burst Mode® Operation n Soft-Start/Voltage Tracking n Frequency Synchronization n Output Overvoltage Protection n Output Overcurrent Foldback Protection n 9mm × 15mm × 3.51mm BGA Package

n Telecom, Networking and Industrial Equipment n Point-of-Load Regulation

The LTM4645 is a 25A output switching mode step-down DC/DC µModule (power module) regulator. Included in the package are the switching controller, power FETs, inductor and all supporting components. Operating over an input voltage range of 4.7V to 15V, the LTM4645 supports an output voltage range of 0.6V to 1.8V, set by a single external resistor. Only a few input and output capacitors are needed.

Its high efficiency design delivers about 86% efficiency from 12V input to 1.0V output with 25A continuous load current. High switching frequency and a current mode architecture enable a very fast transient response to line and load changes without sacrificing stability. The device supports frequency synchronization, programmable multiphase operation, N+1 phase redundancy, and output voltage tracking for supply rail sequencing.

Fault protection features include overvoltage and overcurrent protection. The power module is offered in a space saving 9mm × 15mm × 3.51mm BGA package. The LTM4645 is available with SnPb (BGA) or RoHS compliant terminal finish.

APPLICATIONS

LTM4645 25A DC/DC Step-Down µModule Regulator

µModule Regulators

BGA PACKAGE 77-LEAD (9mm × 15mm × 3.51mm)

LTM4645EY LTM4645IY

Efficiency vs Output Current at 1V Output

12VIN, 1VOUT, 25A DC/DC µModule Regulator

BGA PACKAGE77-LEAD (9mm × 15mm × 3.51mm)

1

VIN

DRVCC

VOUT

GND

GND

GND

L

K

J

H

G

F

E

D

C

B

A

2 3 4GND

PWM CLKOUTTEST1

MODE/PLLIN

PHASMDINTVCC

FREQ

SGND

TEST3

PGOOD

COMPb

GND GND

SVIN

HIZB

GND

RUN5 6 7

TOP VIEW

VFB

VOSNS+

COMPa

TEST2

VOSNS–

TEMP–

TEMP+TRACK/SSSW

LOAD CURRENT (A)0

EFFI

CIEN

CY (%

)

80

4645 TA01b

70

10 205 15 25

90

100

75

60

65

85

95

5V INPUT12V INPUT

HIZB

VIN

SVIN

FREQ

COMPaCOMPbTRACK/SS

PINS NOT USED IN THIS CIRCUIT: CLKOUT, MODE/PLLIN, PGOOD, PHASMD, PWM, RUN, SW, TEMP+, TEMP–

VOUT

VOSNS+

VFB

VOSNS–

22µF25V×2

2.2Ω

4.7µF6.3V

1µF

0.1µF

VIN6V TO 15V

43.2k

DRVCC INTVCC

LTM4645

SGND GND

90.9k

4645 TA01a

100µF6.3V×4

47pF

VOUT1V25A

7


µModule Regulators

n Complete Low EMI Switch Mode Power Supply n EN55022 Class B Compliant n Wide Input Voltage Range: 3.6V to 58V n Up to 4A Output Current

n 24W Output from 12VIN to –24VOUT, PLOSS = 5W, TA = 60°C, tRISE = 60°C, 200LFM

n Output Voltage Range: –26.5V ≤ VOUT– ≤ –0.5V

n Safe Operating Area: VIN + |VOUT–| ≤ 58V

n ±1.67% Total DC Output Voltage Error Over Line, Load and Temperature (–40°C to 125°C)

n Parallel and Current Share with Multiple LTM4651s n Constant-Frequency Current Mode Control n Frequency Synchronization Range: 250kHz to 3MHz n Power Good Indicator and Programmable Soft-Start n Overcurrent/Overvoltage/Overtemperature Protection n 15mm × 9mm × 5.01mm BGA Package

n Avionics, Industrial Control and Test Equipment n Video, Imaging and Instrumentation n 48V Telecom and Network Power Supplies n RF Systems

The LTM4651 is an ultralow noise, 58V, 24W DC/DC μModule inverting topology regulator. It regulates a negative output voltage (VOUT

–) from a positive input supply voltage (VIN), and is designed to meet the radiated emissions requirements of EN55022. Conducted emission requirements can be met by adding standard filter components. Included in the package are the switching controller, power MOSFETs, inductor, filters and support components.

The LTM4651 can regulate VOUT– to a value between –0.5V and

–26.5V, provided that its input and output voltages adhere to the safe operating area criteria of the LTM4651: VIN + |VOUT

–| ≤ 58V. A switching frequency range of 250kHz to 3MHz is supported (400kHz default) and the module can synchronize to an external clock.

Despite being an inverting topology regulator, no level shift circuitry is needed to interface to the LTM4651’s RUN, PGOOD or CLKIN pins; those pins are referenced to GND.

The LTM4651 is offered in a 15mm × 9mm × 5.01mm BGA package with SnPb or RoHS compliant terminal finish.

APPLICATIONS

LTM4651 EN55022B Compliant 58V, 24W Inverting-Output DC/DC µModule Regulator

–24V, 2.25A* Ultralow Noise DC/DC µModule Register

Output Current Capability*

BGA PACKAGE 77-PIN (15mm × 9mm × 5.01mm)

LTM4651EY LTM4651IY

1

A

B

C

D

E

F

G

H

J

K

L

2 3 4TOP VIEW

BGA PACKAGE77-PIN (15mm × 9mm × 5.01mm)

5 6 7

VIN

VD

PGND

TEMP–

NC

NC

VOUT–

NC

SW

GND

SVIN

VINREG

SVOUT–fSET

RUN

PGOOD PGDFB

CLKIN

VOUT–

VOUT–

SVOUT–GNDSNS

EXTVCC

INTVCC

COMPb COMPa

ISETb ISETa

TEMP+TEMP–TEMP+

NC

Protected by U.S. Patents, including 5481178, 5705919, 5847554, 6580258.

PINS NOT USED IN THIS CIRCUIT: CLKIN, PGOOD, PGDFB, SW, EXTVCC TEMP+, TEMP–, NC

ISETaGND ISETb

VIN

SVIN

VD

RUN

INTVCC

VINREG

COMPa

COMPb

fSET

PGND

GNDSNS

SVOUT–

VOUT–

LTM4651–24VOUT, UP TO 2.25A

10µF×2

LOAD

90.9k481k

4.7μF

4.7μF

VIN3.6V

TO 34V

4651 TA01a

INPUT VOLTAGE (V)0 10 20 30 40 50 60

0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

OUTP

UT C

URRE

NT (A

)

4651 TA01b

*Current limit frequency-foldback activates at load currents higher than indicated curves. Continuous output current capability subject to details of application implementa-tion.

VOUT– = –0.5V

VOUT– = –3.3V

VOUT– = –5V

VOUT– = –8V

VOUT– = –12V

VOUT– = –15V

VOUT– = –20V

VOUT– = –24V


Product Family Key Features & Part Numbers

Ultrathin Buck Regulators 1.8mm Height: LTM®4622, LTM4623

Buck-Boost Regulators LTM4607, LTM8055, LTM8056

Multiple Output Buck Regulators Dual: LTM4616, 4620, 4628, 4630 Triple: LTM4615 Quad: LTM4644 Quint: LTM8001, LTM8008

High Power Buck Regulators Up to 144A: Four in Parallel LTM4630

High Voltage Buck Regulators Up to 60V: LTM8027, LTM8050

Digital Interface Buck Regulators Dual Output: LTM4675, LTM4676, LTM4676A

Isolated Converters Up to 1500VDC: LTM8048, LTM8057, LTM8058

Ultralow Noise EN55022 Class B: LTM4606, LTM8033

LED Drivers Up to 36V LED String: LTM8040, LTM8042, LTM8042A

Battery Chargers Li-Ion, Li-Polymer, SLA, LiFePO4: LTM8061, LTM8062, LTM8062A

µModule Product Family Examples For More Information

www.linear.com/uModulepower

1-800-4-LINEAR

Our quickest, simplest and most integrated DC/DC power solutions are complete systems-in-a-package with integrated inductor, MOSFET, DC/DC regulator IC and supporting components. With over 100 power solutions available, each µModule product is qualified with Linear Technology’s stringent electrical, package and thermal reliability tests. Simplify and speed your power system development with µModule power products. Our µModule products are available in both BGA and LGA packages.

Simple & Done

Over 100 µModule® Power Solutions

Complete Power System-in-a-Package


9


µModule Regulators

n Low Noise Silent Switcher Architecture n Wide Input Voltage Range: 3.2V to 40V n Wide Output Voltage Range: 0.8V to 15V n 2A Continuous Output Current at 12VIN, 5VOUT, TA = 85°C n 2.5A Peak Current n Selectable Switching Frequency: 200kHz to 2.2MHz n External Synchronization n Configurable as an Inverter n 6.25mm × 4mm × 2.22mm BGA Package

n Automotive Battery Regulation n Power for Portable Products n Distributed Supply Regulation n Industrial Supplies n Wall Transformer Regulation

The LTM8063 is a 40VIN, 2A continuous, 2.5A peak, step-down µModule (power module) regulator. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 3.2V to 40V, the LTM8063 supports an output voltage range of 0.8V to 15V and a switching frequency range of 200kHz to 2.2MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8063 is packaged in a thermally enhanced, compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8063 is RoHS compliant.

APPLICATIONS

LTM8063 40VIN 2A Silent Switcher µModule Regulator

5VOUT from 6.5VIN to 40VIN Step-Down Converter

Efficiency vs Load Current

BGA PACKAGE 28-LEAD (6.25mm × 4mm × 2.22mm)

LTM8063EY LTM8063IY

1µF

22µF45.3k27.4k

1.4MHz

LTM8063

VOUTVOUT5V2A2.5A PEAK

VINVIN6.5V TO 40V

FBGND

RUN

SYNC

RT

8063 TA01a

PINS NOT USED IN THIS CIRCUIT: TR/SS, PG

12VIN24VIN36VIN

LOAD CURRENT (A)0 0.5 1 1.5 2 2.5

55

65

75

85

95

EFFI

CIEN

CY (%

)

8063 TA01b

GND

BANK 1

GND

BANK 3 VOUT

BANK 2VIN

F

G

E

A

B

C

D

21 43

BGA PACKAGE28-LEAD (6.25mm × 4mm × 2.22mm) BGA PACKAGE

FBPG SYNC

FB TR/SS

RT

TOP VIEW

GND

RUN


Product Family Key Features & Part Numbers

Ultrathin Buck Regulators 1.8mm Height: LTM®4622, LTM4623

Buck-Boost Regulators LTM4607, LTM8055, LTM8056

Multiple Output Buck Regulators Dual: LTM4616, 4620, 4628, 4630 Triple: LTM4615 Quad: LTM4644 Quint: LTM8001, LTM8008

High Power Buck Regulators Up to 144A: Four in Parallel LTM4630

High Voltage Buck Regulators Up to 60V: LTM8027, LTM8050

Digital Interface Buck Regulators Dual Output: LTM4675, LTM4676, LTM4676A

Isolated Converters Up to 1500VDC: LTM8048, LTM8057, LTM8058

Ultralow Noise EN55022 Class B: LTM4606, LTM8033

LED Drivers Up to 36V LED String: LTM8040, LTM8042, LTM8042A

Battery Chargers Li-Ion, Li-Polymer, SLA, LiFePO4: LTM8061, LTM8062, LTM8062A

µModule Product Family Examples For More Information

www.linear.com/uModulepower

1-800-4-LINEAR

Our quickest, simplest and most integrated DC/DC power solutions are complete systems-in-a-package with integrated inductor, MOSFET, DC/DC regulator IC and supporting components. With over 100 power solutions available, each µModule product is qualified with Linear Technology’s stringent electrical, package and thermal reliability tests. Simplify and speed your power system development with µModule power products. Our µModule products are available in both BGA and LGA packages.

Simple & Done

Over 100 µModule® Power Solutions

Complete Power System-in-a-Package


10


µModule Regulators

n Complete Step-Down Switch Mode Power Supply n Low Noise Silent Switcher Architecture n Wide Input Voltage Range: 3.4V to 40V n Wide Output Voltage Range: 0.97V to 18V n 2.5A Continuous Output Current, 3.5A Peak n Selectable Switching Frequency: 200kHz to 3MHz n External Synchronization n Programmable Soft-Start n Tiny, Low Profile 6.25mm × 6.25mm × 2.32mm RoHS Compliant BGA Package

n Automotive Battery Regulation n Power for Portable Products n Distributed Supply Regulation n Industrial Supplies n Wall Transformer Regulation

The LTM8065 is a 40VIN, 3.5A peak, 2.5A continuous step-down µModule (power module) regulator. Included in the package are the switching controller, power switches, inductor and all support components. Operating over an input voltage range of 3.4V to 40V, the LTM8065 supports an output voltage range of 0.97V to 18V and a switching frequency range of 200kHz to 3MHz, each set by a single resistor. Only the input and output filter capacitors are needed to finish the design.

The low profile package enables utilization of unused space on the bottom of PC boards for high density point of load regulation. The LTM8065 is packaged in a thermally enhanced, compact overmolded ball grid array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8065 is RoHS compliant.

APPLICATIONS

LTM8065 40VIN, 2.5A Silent Switcher µModule Regulator

BGA PACKAGE 36-LEAD (6.25mm × 6.25mm × 2.32mm)

LTM8065EY LTM8065IY 2.2µF

22µF60.4k41.2k

1MHz

LTM8065

VOUTVOUT5V2.5A3.5A PEAK

VINVIN7V TO 40V

FBGND

RUN

SYNC

RT

8065 TA01a

PINS NOT USED IN THIS CIRCUIT: TR/SS, PG

AUXBIAS

LOAD CURRENT (A)

VIN = 12V

0 1 2 380

85

90

95EF

FICI

ENCY

(%)

8065 TA01b

GND

BANK 1 GND

BANK 3 VOUT

BANK 2VIN

F

E

A

B

C

D

21 43 5 6

BGA PACKAGE36-LEAD (6.25mm × 6.25mm × 2.32mm) BGA PACKAGE

BIAS

FB

PG

SYNCAUX TR/SS

RT

TOP VIEW

GND GND

RUN


5VOUT from 7VIN to 40VIN Step-Down Converter

11



n Wide Input Voltage Range: 2.8V to 60V n Ultralow Quiescent Current and Low Ripple Burst Mode Operation: IQ = 9µA

n 2A, 60V Power Switch n Positive or Negative Output Voltage Programming with a Single Feedback Pin

n Programmable Frequency (300kHz to 2MHz) n Synchronizable to an External Clock n Spread Spectrum Frequency Modulation for Low EMI n BIAS Pin for Higher Efficiency n Programmable Undervoltage Lockout (UVLO) n Thermally Enhanced 10-Lead 3mm × 3mm DFN and 16-Lead MSOP Packages

n Industrial and Automotive n Telecom n Medical Diagnostic Equipment n Portable Electronics

The LT8362 is a current mode DC/DC converter with a 60V, 2A switch operating from a 2.8V to 60V input. With a unique single feedback pin architecture it is capable of boost, SEPIC or inverting configurations. Burst Mode operation consumes as low as 9µA quiescent current to maintain high efficiency at very low output currents, while keeping typical output ripple below 15mV.

An external compensation pin allows optimization of loop bandwidth over a wide range of input and output voltages and programmable switching frequencies between 300kHz and 2MHz. A SYNC/MODE pin allows synchronization to an external clock. It can also be used to select between burst or pulse-skipping modes of operation with or without Spread Spectrum Frequency Modulation for low EMI. For increased efficiency, a BIAS pin can accept a second input to supply the INTVCC regulator. Additional features include frequency foldback and programmable soft-start to control inductor current during start-up.

The LT8362 is available in a thermally enhanced 10-lead 3mm × 3mm DFN package or a thermally enhanced 16-lead MSOP package with four pins removed.

APPLICATIONS

LT8362 Low IQ Boost/SEPIC/ Inverting Converter with 2A, 60V Switch

DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN

LT8362EDD LT8362IDD LT8362HDD

MSE PACKAGE VARIATION: MSE16(12)

16-LEAD PLASTIC MSOPLT8362EMSE LT8362IMSE LT8362HMSE

TOP VIEW

DD PACKAGE10-LEAD (3mm × 3mm) PLASTIC DFN

10

9

6

7

8

4

5

3

2

1 SW

SYNC/MODE

SS

RT

FBX

EN/UVLO

VIN

INTVCC

BIAS

VC

11PGND,GND

8362 TA01a

34.8k

57.6k

150pF

20k

1µF

VIN SW

EN/UVLOLT8362

VIN8V TO 38V

VOUT48V200mA AT VIN = 8V320mA AT VIN = 12V700mA AT VIN = 24V

6.8μH

1M

SYNC/MODE

FBX

BIAS

SS GND VC

4.7µF

4.7µF

RT

INTVCC

10nF

4.7pF

EFFICIENCY

POWER LOSS

VIN = 12VVIN = 24V

LOAD CURRENT (A)0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

0

10

20

30

40

50

60

70

80

90

100

0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

EFFI

CIEN

CY (%

)

POWER LOSS (W

)

8362 TA01b

1 3 5678

EN/UVLO

VIN

INTVCCNC

BIASVC

16 14 1211109

SW1

SW2 SYNC/MODESSRTFBX

TOP VIEW

17PGND,

GND

MSE PACKAGEVARIATION: MSE16 (12)16-LEAD PLASTIC MSOP

2MHz, 48V Output Boost Converter

Efficiency and Power Loss

12



LTC7150S

VIN 3.1V to 20V

VOUT ≥0.6V @ 20A

Info & Free Samples


www.linear.com/product/LTC7150S1-800-4-LINEAR

Selected Monolithic Single & Dual Buck Regulators

Need a high performance, high power point-of-load power supply for your digital IC (FPGA, uP, uC, DSP, GPU, PLD, ASIC)? The LTC7150S is a 20A, high efficiency monolithic synchronous buck regulator that incorporates Silent Switcher 2 technology, delivering excellent EMI performance while easing board layout. Its phase-lockable controlled on-time current mode architecture enables large step-down ratios at high switching frequencies to deliver high power density solutions. PolyPhase operation allows multiple LTC7150S regulators to run in parallel out-of-phase, reducing the amount of required input and output capacitance. Its operating supply voltage range is 3.1V to 20V, with an output voltage range of 0.6V to VIN. With an operating frequency programmable from 400kHz to 3MHz, it can use physically smaller inductor and capacitor sizes, and can be externally synchro-nized over the same range for noise sensitive applications.

12VIN to 1.2VOUT, 92% Efficient Monolithic Buck

20VIN & 20AOUT

Silent Switcher®2

LTC7150S

LTC7151S*

LT8642S*

LT8652S*

LTC3636

LTC7124

3.1V to 20V3.1V to 20V3V to 18V3V to 18V

3.1V to 20V3.1V to 17V

20A15A10A

8.5A/8.5A6A/6A

3.5A/3.5A

3MHz3MHz3MHz3MHz4MHz4MHz

YesYesNoYesNoNo

5 x 6 x 1.3mm BGA

4 x 5 x 0.75mm LQFN

4 x 4 x 0.94mm LQFN

4 x 7 x 0.94mm LQFN

4 x 5 x 0.75mm QFN

3 x 5 x 0.75mm QFN

Part Number Freq (Max) DifferentialRemote Sense

SS 2 ^^ SS 2 ^^SS 2 ^^SS 2 ^^

NoNo

SilentSwitcher PackageVIN RangeIOUT

0.6V to VIN

0.5V to VIN

0.6V to VIN

0.6V to VIN

0.6V to 12V0.6V to VIN

VOUT Range

* Future product, please contact for more information. ^^ SS 2 = noise-cancelling hot loops and integrated capacitors

12

10

8

6

4

2

0

100

95

90

85

80

75

700 4 8 12 16 20

POWER LOSS (W

)EFFI

CIEN

CY (%

)

IOUT (A)


n Flexible Power Supply System Capable of Four Regulated Outputs with VBATT << VOUT

n Two High Voltage Synchronous Buck Regulators n 3V to 42V Input Voltage Range n Output Currents Up to 2.5A and 1.5A

n One Low Voltage Synchronous Buck Regulator n 2.6V to 5.5V Input Voltage Range n Output Currents Up to 1.8A

n One Boost Controller Allows Buck Converters to Regulate with VBATT << VOUT

n Selectable Burst Mode Operation Allows Low 28µA IQ with High Voltage Channels Active

n Programmable Power-On Reset n Individual Channel Power Good Indicators n Step-Down Switching Frequency: 250kHz to 2.2MHz n Available in 40-Lead QFN (6mm × 6mm) Package

n Automotive Stop-Start and Cold Crank Ride Through n Last-Gasp CPU Power Hold-Up n Industrial Controls and Power Supplies

The LT8603 is a highly flexible, quad output regulator combining two high input voltage capable monolithic step-down switching regulators, one low input voltage capable monolithic step-down regulator, and a boost controller to satisfy a wide range of applications while occupying minimal board space.

With the boost controller configured to supply the chip VIN supply, the LT8603 produces three precisely regulated outputs even when the boost input voltage falls significantly below the regulated output voltages, such as during an automotive cold crank scenario. Alternatively, with the boost controller driven from one of the step-down regulator outputs or configured as a SEPIC, the LT8603 provides four precisely regulated outputs over a wide input voltage range.

The LT8603 provides robust regulation by including a cycle-by-cycle current limit for all step-down regulators, thermal shutdown, and a boost controller that can tolerate reverse battery connections and negative transient input voltages down to –42V.APPLICATIONS

LT8603 42V, Low IQ, Quad Output Triple Monolithic Buck Converter and Boost Controller

Cold Crank Tolerant Automotive Triple Output Supply

LT8603 Response to a Cold Crank Automotive Input Waveform

8603 TA01a

OUT48V FOR 2V < VBATT < 8.5V

GND

PORENPOREN

VBATT2V TO 42V

(BOOSTSTART-UP

ABOVE 4.3V)

LT8603

FB4

GATE4

ISN4

PG1-4BIAS

RST

PG1-4OUT2

RESET

ISP4PVIN1VINEN/UVLO PVIN2

BST2

OUT31.2V, 1.8A

SW3

FB3

OUT23.3V, 2.5A – IPVIN3

SW2

FB2

PVIN3

BST1

OUT15V, 1.5A

SW1

FB1TRKSS1-2

CPOR

RT

SYNC

FSEL4BFSEL4AINTVCC

INTVCC4

RUN3

2

4

TIME (10ms/DIV)

VOLTAGE2V/DIV

0V

8603 TA01b

VBATTVOUT4

VOUT1

VOUT2

VOUT3

UJ PACKAGE 40-LEAD (6mm × 6mm) PLASTIC QFN

LT8603EUJ LT8603IUJ

3940 38 37 36 35 34 33 32 31

11 2012 13 14 15

TOP VIEW

41GND

UJ PACKAGE40-LEAD (6mm × 6mm) PLASTIC QFN

16 17 18 19

22

23

24

25

26

27

28

29

9

8

7

6

5

4

3

2

PG1

GND

SW1

BST1

BST2

SW2

SW2

GND

BIAS

PG2

RUN3

RT

INTVCC

FB3

FB1

FB2

FB4

VIN

EN/UVLO

TRKSS1

PG3

PORE

N

GND

PVIN

1

SW3

GND

PVIN

3

SYNC

RST

CPOR

PG4

FSEL

4A

GND

PVIN

2

GATE

4

INTV

CC4

FSEL

4B

ISN4

ISP4

TRKS

S2

21

30

10

1



LTC7150S

VIN 3.1V to 20V

VOUT ≥0.6V @ 20A

Info & Free Samples


www.linear.com/product/LTC7150S1-800-4-LINEAR

Selected Monolithic Single & Dual Buck Regulators

Need a high performance, high power point-of-load power supply for your digital IC (FPGA, uP, uC, DSP, GPU, PLD, ASIC)? The LTC7150S is a 20A, high efficiency monolithic synchronous buck regulator that incorporates Silent Switcher 2 technology, delivering excellent EMI performance while easing board layout. Its phase-lockable controlled on-time current mode architecture enables large step-down ratios at high switching frequencies to deliver high power density solutions. PolyPhase operation allows multiple LTC7150S regulators to run in parallel out-of-phase, reducing the amount of required input and output capacitance. Its operating supply voltage range is 3.1V to 20V, with an output voltage range of 0.6V to VIN. With an operating frequency programmable from 400kHz to 3MHz, it can use physically smaller inductor and capacitor sizes, and can be externally synchro-nized over the same range for noise sensitive applications.

12VIN to 1.2VOUT, 92% Efficient Monolithic Buck

20VIN & 20AOUT

Silent Switcher®2

LTC7150S

LTC7151S*

LT8642S*

LT8652S*

LTC3636

LTC7124

3.1V to 20V3.1V to 20V3V to 18V3V to 18V

3.1V to 20V3.1V to 17V

20A15A10A

8.5A/8.5A6A/6A

3.5A/3.5A

3MHz3MHz3MHz3MHz4MHz4MHz

YesYesNoYesNoNo

5 x 6 x 1.3mm BGA

4 x 5 x 0.75mm LQFN

4 x 4 x 0.94mm LQFN

4 x 7 x 0.94mm LQFN

4 x 5 x 0.75mm QFN

3 x 5 x 0.75mm QFN

Part Number Freq (Max) DifferentialRemote Sense

SS 2 ^^ SS 2 ^^SS 2 ^^SS 2 ^^

NoNo

SilentSwitcher PackageVIN RangeIOUT

0.6V to VIN

0.5V to VIN

0.6V to VIN

0.6V to VIN

0.6V to 12V0.6V to VIN

VOUT Range

* Future product, please contact for more information. ^^ SS 2 = noise-cancelling hot loops and integrated capacitors

12

10

8

6

4

2

0

100

95

90

85

80

75

700 4 8 12 16 20

POWER LOSS (W

)EFFI

CIEN

CY (%

)

IOUT (A)


14



n Silent Switcher 2 Architecture: n Ultralow EMI on Any PCB n Eliminates PCB Layout Sensitivity n Internal Bypass Capacitors Reduce Radiated EMI n Optional Spread Spectrum Modulation

n 4A DC from Each Channel Simultaneously n Up to 6A on Either Channel n Ultralow Quiescent Current Burst Mode Operation:

n 6.2μA IQ Regulating 12VIN to 5VOUT1 and 3.3VOUT2 n Output Ripple <10mVP-P

n Optional External VC Pin: Fast Transient Response and Current Sharing (Extra 50µA IQ/Channel)

n Forced Continuous Mode n High Efficiency at High Frequency n 94.6% Efficiency at 2A, 5VOUT from 12VIN at 2MHz n 93.3% Efficiency at 4A, 5VOUT from 12VIN at 2MHz n Fast Minimum Switch-On Time: 40ns n Wide Input Voltage Range: 3.0V to 42V n Adjustable and Synchronizable: 300kHz to 3MHz n Small 4mm × 6mm 32-Lead LQFN Package

n General Purpose Step-Down n Automotive and Industrial Supplies

The LT8650S is a dual step-down regulator that delivers up to 4A of continuous current from both channels and supports loads up to 6A from each channel. The LT8650S features the second generation Silent Switcher architecture to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes integration of bypass capacitors to optimize high frequency current loops and make it easy to achieve advertised EMI performance by eliminating layout sensitivity.

The fast, clean, low overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 40ns minimum on-time allows high step down ratios at high switching frequencies.

Burst Mode operation features a 6.2μA quiescent current resulting in high efficiency at low output currents, forced continuous mode allows fixed switching frequency operation over the entire output load range, and spread spectrum operation can further reduce EMI emissions. External VC pins allow optimal loop compensation for fast transient response. The VC pins can also be used for current sharing and the CLKOUT pin enables synchronizing two LT8650S chips to generate a 4-phase, 16A supply. APPLICATIONS

LT8650S Dual Channel 4A, 42V, Synchronous Step-Down Silent Switcher 2 with 6.2µA Quiescent Current

Efficiency

5V/4A, 3.3V/4A 2MHz Step-Down Converter

LQFN PACKAGE 32-LEAD (6mm × 4mm × 0.94mm)

LT8650SEV LT8650SIV

LQFN PACKAGE32-LEAD (6mm × 4mm × 0.94mm)

TOP VIEW

272829303132

VC1

FB1

SS1

SS2

FB2

VC2

SYNCPG

2

PG1

TEM

P

EN2

EN1

161514131211

26

25

24

23

22

20

19

18

17

BIAS

VCC

BST1

SW1

SW1

SW2

SW2

BST2

CLKOUT

1

2

4

5

7

8

10

RT

GND

VIN1

VIN1

VIN2

VIN2

GND

33GND

34GND

35GND

36GND

37GND

38GND

8650s TA01a

VIN2VIN23.7V TO 42V

VOUT23.3V4A

EN/UV2

LT8650S

SW2

FB2

VC2 VCC

SS2

4.7µF1.0µH

BIAS

VIN1

EN/UV1

SW1

FB1

VC1VCC

SS1

RT

10nF

4.7pF 47µF×21M

316k

VIN15.4V TO 42V

VOUT15V4A

4.7µF

10nF

47µF×2 4.7pF 1M

191k

1.0µH

1µF15k

fSW = 2MHz

GND SYNCVCC

LOAD CURRENT (A)0 1 2 3 4 5 6

40

45

50

55

60

65

70

75

80

85

90

95

100

EFFI

CIEN

CY (%

)

CH1 5VCH2 3.3V

VIN1 = VIN2 = 12VfSW = 2MHz

8650s TA01b

Protected by U.S. Patents, including 8823345.

15



n 4-Switch Current Mode Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT

n Wide VIN Range: 4.5V to 150V n Wide Output Voltage Range: 1.2V ≤ VOUT ≤ 150V n Synchronous Rectification: Up to 99% Efficiency n ±1% 1.2V Voltage Reference n Input or Output Average Current Limit n Onboard LDO or External NMOS LDO for DRVCC n 36V EXTVCC LDO Powers Drivers n Programmable 6V to 10V DRVCC Optimizes Efficiency n No Top FET Refresh Noise in Boost or Buck Mode n VOUT Disconnected from VIN During Shutdown n Phase-Lockable Fixed Frequency (50kHz to 600kHz) n No Reverse Current During Start-Up n Power Good Output Voltage Monitor n 150V Rated RUN Pin with Accurate Turn-On Threshold n Programmable Input Overvoltage Lockout n Thermally Enhanced FE38 TSSOP Package Modified for High Voltage Operation

n Industrial, Automotive, Medical, Military, Avionics

The LTC3779 is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The constant frequency current mode architecture allows a phase-lockable frequency of up to 600kHz, while an input/output constant current loop provides support for battery charging.

With a wide 4.5V to 150V input and output range and seamless transfers between operating regions, the LTC3779 is ideal for automotive, telecom and battery-powered systems.

The LTC3779 features a precision 1.2V reference and power good output indicator. The MODE pin can select between pulse-skipping mode or forced continuous mode of operation. Pulse-skipping mode offers high efficiency at light load while forced continuous mode operates at a constant frequency for noise sensitive applications. The PLLIN pin allows the IC to be synchronized to an external clock. The SS pin ramps the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

APPLICATIONS

LTC3779 150V VIN and VOUT Synchronous 4-Switch Buck-Boost Controller

FE PACKAGEVARIATION: FE38(31)

38-LEAD PLASTIC TSSOPLTC3779EFE LTC3779IFELTC3779HFE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

TOP VIEW

FE PACKAGEVARIATION: FE38(31)

38-LEAD PLASTIC TSSOP

38

37

36

34

32

30

28

26

24

22

21

20

BG1

VINOV

DRVSET

SGND

EXTVCC

NDRV

DRVCC

V5

SS

VFB

SENSEP

SENSEN

ITH

SGND

MODE

PLLIN

FREQ

PGOOD

BG2

SW1

TG1

BOOST1

VIN

VINSNS

VOUTSNS

IAVGSNSN

IAVGSNSP

RUN

BOOST2

TG2

SW2

39PGND

Efficiency and Power Loss vs Input Voltage

VOUT = 48VIOUT = 10A

EFFICIENCY

POWER LOSS

VIN VOLTAGE (V)0 12 24 36 48 60 72 84 96 108 120

90

92

94

96

98

100

0

6

12

18

24

30

EFFI

CIEN

CY (%

)

POWER LOSS (W

)

3779 TA01b

4.7µF

4mΩ

4mΩ

30µF

475k

15µH0.22µF

0.22µF12.1k

3779 TA01a

10k100pF

10nF

2.2µF

0.1µF

56.2k

FREQ

IAVGSNSN

IAVGSNSP

ITH

RUN

SENSEN

SENSEP

SS

VFB

VINOV

VINSNS

VOUTSNS

BOOST1

BOOST2

DRVCC

NDRV

PGND

SGND

SW1

SW2

V5

VIN

TG1

BG1

BG2

TG2

LTC3779

100Ω

100Ω

220pF

1k

1k

1.21k

133k

10µF

10k

5Ω

0.1µF

5µF 56µF

VIN20V TO

120V 20µFVOUT48V10A

100Ω

100Ω

16



n Phase Extender for High Phase Count Voltage Rails n Operates with Power Blocks, DrMOS or External Gate Drivers and MOSFETs

n Accurate Phase-to-Phase Current Sharing n Sub-Milliohm DCR Current Sensing n Phase-Lockable Fixed Frequency 250kHz to 1MHz n Immediate Response to Master IC's Fault n Up to 12-Phase Operation n Wide VIN Range: 4.5 to 38V n VOUT Range: Up to 3.5V (LOWDCR Pin High) Up to 5.5V (LOWDCR Pin Low)

n Proprietary Current Mode Control Loop n Programmable CCM/DCM Operation n Programmable Phase Shift Control n 24-Lead (4mm × 4mm) QFN Package

n High Current Distributed Power Systems n Telecom, Datacom and Storage Systems n Intelligent Energy Efficient Power Regulation

The LTC3874-1 is a dual PolyPhase current mode synchronous step-down slave controller. It enables high current, multiphase applications when paired with a companion master controller by extending the phase count. Compatible master controllers include the LTC3884-1, LTC3774, LTC3875, LTC3877 and LTC3866. The LTC3874-1 employs a unique architecture that enhances the signal-to-noise ratio of the current sense signal, allowing the use of sub-milliohm DC resistance power inductors to maximize efficiency while reducing switching jitter. Its peak current mode architecture allows for accurate phase-to-phase current sharing even for dynamic loads.

Effectively working with a master controller, the LTC3874-1 supports all the programmable features as well as fault protection.

APPLICATIONS

LTC3874-1 PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing

High Efficiency, 4-Phase 1.8V/120A Step-Down Supply

4-Phase Efficiency and Power Loss vs Output Current, Sub-Milliohm DCR

vs Traditional DCR

UF PACKAGE 24-LEAD (4mm × 4mm) PLASTIC QFN

LTC3874EUF-1 LTC3874IUF-1

VIN = 12VVOUT = 1.8VfSW = 425kHzCCM

EFFICIENCY

POWER LOSS

0.29mΩ1.5mΩ0.29mΩ1.5mΩ

LOAD CURRENT (A)0 10 20 30 40 50 60 70 80 90 100 110 120

70

75

80

85

90

95

100

2

5

8

11

14

17

20EF

FICI

ENCY

(%)

POWER LOSS (W

)

38741 TA01b

24 23 22 21 20 19

7 8 9

TOP VIEW

UF PACKAGE24-LEAD (4mm × 4mm) PLASTIC QFN

25GND

10 11 12

6

5

4

3

2

1

13

14

15

16

17

18ISENSE0+

ISENSE0–

RUN0

RUN1

ISENSE1–

ISENSE1+

VCC0

VIN

INTVCC

EXTVCC

VCC1

PWM1

MOD

E0

I TH0

LOW

DCR

FAUL

T0

FAUL

T1

PWM

0

MOD

E1

I TH1

FREQ

ILIM

SYNC

PHAS

MD

PWM0 PWM1LTC3874-1

INTVCC

0.22µF

VCC0VCC1

PHASMDLDWDCR

ILIM

FREQGND

RUN0

SYNC

RUN1FAULT0FAULT1

RUN0

649Ω

(0.29mΩ DCR)0.215µH

(0.29mΩ DCR)0.215µH

FAULT0FAULT1

RUN1

SYNC

REFER TO LTC3884-1 DATA SHEETFOR MASTER SETUP

PIN NOT USED IN THIS CIRCUIT: EXTVCC

ITH0ITH1

VSENSE0+1.8V

100µF×3

100µF×3

470µF×2

470µF×2

LTC3884-1

ISENSE0+

ISENSE0–

ISENSE1+

ISENSE1–

ITH0ITH1

VSENSE1+

VIN7V TO 14V

VOUT1.8V120A

VIN

PGOOD0PGOOD1

MODE0MODE1

38741 TA01a

100k

DrMOS DrMOS

+ 0.22µF

4.7µF

+

649Ω

Protected by U.S. Patents, including 5481178, 5705919, 5929620, 6144194, 6177787, 6580258, 5408150.

17



94% Efficiency 24W (16V, 1.5A) 2MHz Buck-Boost LED Driver

Efficiency vs VIN

n 4-Switch Single Inductor Architecture Allows VIN Above, Below or Equal to VOUT

n Up to 95% Efficiency at 2MHz n Proprietary Peak-Buck Peak-Boost Current Mode n Wide VIN Range: 4V to 60V n Wide VOUT Range: 0V to 60V (51V LED) n ±3% LED Current Accuracy n 2000:1 External and 128:1 Internal PWM Dimming n High Side PMOS PWM Switch Driver n No Top MOSFET Refresh Noise in Buck or Boost n Adjustable and Synchronizable: 600kHz to 2MHz n Flicker-Free Spread Spectrum for Low EMI n Open and Short LED Protection with Fault Reporting n Available in 28-Lead TSSOP with Exposed Pad and 28-Lead QFN (4mm × 5mm)

n Automotive Head Lamps/Running Lamps n High Frequency LED Lighting

The LT8391A is a synchronous 4-switch buck-boost LED controller that regulates LED current from input voltage above, below or equal to the output voltage. The proprietary peak-buck peak-boost current mode control scheme allows adjustable and synchronizable 600kHz to 2MHz fixed frequency operation, or internal 25% triangle spread spectrum operation for low EMI. With 4V to 60V input, 0V to 60V output, and seamless low noise transitions between operation regions, the LT8391A is ideal for LED driver and battery charger applications in automotive, industrial and battery-powered systems.

The LT8391A provides both internal (up to 128:1) and external (up to 2000:1) LED current PWM dimming with a high side PMOS switch. Two CTRL pins provide flexible 20:1 analog dimming with ±3% LED current accuracy at 100mV full scale. Fault protection is provided to detect an open or short LED condition, during which the LT8391A retries, latches off or keeps running.

APPLICATIONS

LT8391A 60V 2MHz Synchronous 4-Switch Buck-Boost LED Driver Controller

UFD PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN

LT8391AEUFD LT8391AIUFD LT8391AHUFD

FE PACKAGE 28-LEAD PLASTIC TSSOP

LT8391AEFE LT8391AIFE LT8391AHFE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

TOP VIEW

FE PACKAGE28-LEAD PLASTIC TSSOP

28

27

26

25

24

23

22

21

20

19

18

17

16

15

BG1

BST1

SW1

TG1

LSP

LSN

VIN

INTVCC

EN/UVLO

RP

PWM

VREF

CTRL1

ISP

BG2

BST2

SW2

TG2

VOUT

PWMTG

SYNC/SPRD

RT

VC

FB

SS

FAULT

CTRL2

ISN

29GND

165k

22nF

4.7µF 0.1µF22µF

383k

4.7µF100k

0.47µF

59.0k

3.3nF

4.7k

1M48.7k

10µF

100k

90.9k

0.1µF

1µF 1µF

2.2µH6mΩ

56mΩ

300k

113k

EN/UVLO

VREF

CTRL1FAULT

BG2

BST2

TG2

INTVCC

FB

VOUT

ISP

ISN

SYNC/SPRD

VIN6V TO 32V CONTINUOUS

4V TO 56V TRANSIENT

2MHz

63V100V

×225V×2

FAULT

LSP LSNSW1 SW2BST1

TG1

BG1

VIN LT8391A

SS VC RT

GND

SSFM OFF

SSFM ON

INTVCCINTVCC

INTVCC

PWMTG

16V1.5ALEDs

PWM

RPCTRL2

ANALOG DIM PWM DIM

PWM SETTING

488Hz

EXT INT

8391a TA01a

9 10

TOP VIEW

UFD PACKAGE28-LEAD (4mm × 5mm) PLASTIC QFN

11 12 13

28 27 26 25 24

14

23

6

5

4

3

2

1TG1

LSP

LSN

VIN

INTVCC

EN/UVLO

RP

PWM

TG2

VOUT

PWMTG

SYNC/SPRD

RT

VC

FB

SS

SW1

BST1

BG1

BG2

BST2

SW2

V REF

CTRL

1

ISP

ISN

CTRL

2

FAUL

T

7

17

18

19

20

21

22

16

8 15

29GND

INPUT VOLTAGE (V)0 5 10 15 20 25 30 35 40 45

60

65

70

75

80

85

90

95

100

EFFI

CIEN

CY (%

)

8391a TA01b

18



n Easily Configurable as a Synchronous Buck, Boost, SEPIC, ZETA or Nonsynchronous Buck-Boost Converter

n Wide Input Range: 4.5V to 42V (VIN Can Operate to 0V, when EXTVCC > 4.5V)

n Automatic Low Noise Burst Mode Operation n Low IQ in Burst Mode Operation (15μA Operating) n Input Voltage Regulation for High Impedance Source n 100% Duty Cycle in Dropout (Buck Mode) n 2A Gate Drivers (BG and TG) n Adjustable Soft-Start with One Capacitor n Frequency Programmable from 100kHz to 750kHz n Can Be Synchronized to External Clock n Available in 20-Lead TSSOP and 20-Lead 3mm × 4mm QFN Packages

n General Purpose DC/DC Conversion

n Automotive Systems n Industrial Supplies n Solar Panel Power Converter

The LT8711 is a multitopology current mode PWM controller that can easily be configured as a synchronous buck, boost, SEPIC, ZETA or as a nonsynchronous buck-boost converter. Its dual gate drive voltage inputs optimize gate driver efficiency.

The 15µA no-load quiescent current with the output voltage in regulation extends operating run time in battery powered systems. Low ripple Burst Mode operation enables high efficiency at very light loads while maintaining low output voltage ripple. The LT8711's fixed switching frequency can be set from 100kHz to 750kHz or can be synchronized to an external clock.

The additional features include 100% duty cycle capability when in buck mode, a topology selection pin and adjustable soft-start. LT8711 is available in the 20-lead TSSOP and 20-lead 3mm × 4mm QFN packages.

APPLICATIONS

LT8711 Micropower Synchronous Multitopology Controller with 42V Input Capability

FE PACKAGE 20-LEAD PLASTIC TSSOP

LT8711EFE LT8711IFE

FE PACKAGE20-LEAD PLASTIC TSSOP

1

2

3

4

5

6

7

8

9

10

TOP VIEW

20

19

18

17

16

15

14

13

12

11

EN/FBIN

FB

VC

SS

OPMODE

ISP

ISN

INTVEE

BIAS

TG

RT

SYNC

NC

CSP

CSN

EXTVCC

VIN

INTVCC

NC

BG

21GND

UDC PACKAGE 20-LEAD (3mm × 4mm) PLASTIC QFN

LT8711EUDC LT8711IUDC

20 19 18 17

7 8

TOP VIEW

21GND

UDC PACKAGE20-LEAD (3mm × 4mm) PLASTIC QFN

9 10

6

5

4

3

2

1

11

12

13

14

15

16VC

SS

OPMODE

ISP

ISN

INTVEE

CSP

CSN

EXTVCC

VIN

INTVCC

NC

FB EN/F

BIN

RT SYNC

BIAS TG NC BG

BIAS

INTVEE

TG

BGCSPCSN

2.2µF

2.2µF

100pF

60.4k

110k

330nF

100pF

2.2nF

ISN

ISPGND

EN/FBINEXTVCC

OPMODE

INTVCC

RTSYNC

SS

VC

1M4mΩ

69.8k

100µF ×216V, X7R

VOUT12V, 3.5A (VIN >16V)2.5A (9V < VIN < 16V)1.5A (VIN < 9V)

10µF ×650V, X7R

VIN5V TO

40V

LT8711

FB

VIN

VOUT

M1

D1L1

4.7µH D2

M2

4mΩ

8711 TA01a

400kHz 5V to 40V Input/12V Output Nonsynchronous Buck-Boost

LOAD CURRENT (A)0.001 0.01 0.1 1 40

10

20

30

40

50

60

70

80

90

100

EFFI

CIEN

CY (%

)

8711 TA01b

VIN = 5VVIN = 12VVIN = 24VVIN = 36V


Our No-Opto isolated flyback devices need no opto-coupler or LT1431 for regulation. The devices sense the reflected isolated output voltage from the primary-side waveform, resulting in better than ±1% load and line regulation. This simplifies the design, enables a smaller solution size and only requires one component crossing the isolation barrier. Several off-the-shelf transformers are shown in the data sheets, making it easy to complete the design.

No-Opto Isolated Flyback Converters

•

•

No Opto orReference

VOUT

SOT-23 SO-SE

GND

SW

RFB

VIN

VIN: 2.7V to 100V

LT830X

Switch

Inside

No-Opto Monolithic Devices (Internal Switch)

No-Opto Controller Devices (External Switch)

Part Number VIN Range (V) Max POUT (W) Power Switch Rating Package

LT8300 6-100 2 0.23A/150V SOT-23

LT8303 5.5-100 5 0.5A/150V SOT-23

LT8301 2.7-42 6 1.2A/65V SOT-23

LT8302 2.8-42 18 3.6A/65V SO-8E

LT8304/LT8304-1 3-100 24 2A/150V SO-8E

LT8315 18-560 15 0.3A/630V TSSOP-20 (16)

Part Number VIN Range Max POUT (W) Description Package

LT3748 5VDC-100VDC 80-100 No-Opto Flyback Controller MSOP-16 (12)

LT8309 4.5VDC-40VDC 80-100 Flyback Synchronous Rectifier Driver SOT-23

LT3798 20-400VDC/90-264VAC 80-100 No-Opto Flyback Controller with PFC MSOP-16E


Our No-Opto isolated flyback devices need no opto-coupler or LT1431 for regulation. The devices sense the reflected isolated output voltage from the primary-side waveform, resulting in better than ±1% load and line regulation. This simplifies the design, enables a smaller solution size and only requires one component crossing the isolation barrier. Several off-the-shelf transformers are shown in the data sheets, making it easy to complete the design.

No-Opto Isolated Flyback Converters

•

•

No Opto orReference

VOUT

SOT-23 SO-SE

GND

SW

RFB

VIN

VIN: 2.7V to 100V

LT830X

Switch

Inside

No-Opto Monolithic Devices (Internal Switch)

No-Opto Controller Devices (External Switch)

Part Number VIN Range (V) Max POUT (W) Power Switch Rating Package

LT8300 6-100 2 0.23A/150V SOT-23

LT8303 5.5-100 5 0.5A/150V SOT-23

LT8301 2.7-42 6 1.2A/65V SOT-23

LT8302 2.8-42 18 3.6A/65V SO-8E

LT8304/LT8304-1 3-100 24 2A/150V SO-8E

LT8315 18-560 15 0.3A/630V TSSOP-20 (16)

Part Number VIN Range Max POUT (W) Description Package

LT3748 5VDC-100VDC 80-100 No-Opto Flyback Controller MSOP-16 (12)

LT8309 4.5VDC-40VDC 80-100 Flyback Synchronous Rectifier Driver SOT-23

LT3798 20-400VDC/90-264VAC 80-100 No-Opto Flyback Controller with PFC MSOP-16E


LT8303 Telecom/Datacom Isolated Schematic

Output Load and Line Regulation

Features n Input Voltage Ranging from 2.7V to 400V n No Opto-Coupler Required n Primary-Side VOUT Sensing n Only One Part Crossing the Isolation Barrier n Internal Loop Compensation for Monolithic Required Devices n Compact Packages n Off-the-Shelf Transformers from Wurth, Sumida and Pulse Engineering

Applications n Telecom/Datacom n Industrial Controls n Automotive n Factory Automation n Heavy Equipment n Medical n Robotics and Aviation n Housekeeping Supplies

1.25cm

3cm

T16:1

150µH 4.2µH4.7µF

VIN6V TO 80V

VOUT+

5V

VOUT–

LT8303

RFB

SWEN/UVLO

VIN

GND

316k2.5mA TO 0.33A (VIN = 12V)2.5mA TO 0.52A (VIN = 24V)2.5mA TO 0.73A (VIN = 48V)2.5mA TO 0.84A (VIN = 72V)

•

•

100µF


LOAD CURRENT (mA)

0 100 200 300 400 500 600 700 800 9004.7

4.8

4.9

5.0

5.1

5.2

5.3

OUTP

UT V

OLTA

GE (V

)


LOAD CURRENT (mA)

0 100 200 300 400 500 600 700 800 90040

50

60

70

80

90

100

EFFI

CIEN

CY (%

)


LT8303 Demo Board Photo

SOT-23

1016

www.linear.com/830X n 1-800-454-6327

Description

400mA boost converter with MPP control and 250mV start-up

300mA buck-boost converter and power manager with MPPC

Ultralow voltage converter and primary battery life extender

Ultralow voltage boost converter and system manager

Auto-polarity version of LTC3108

Energy harvesting DC/DC converter with battery life extender

Piezoelectric energy harvesting power supply

Power tracking 2A solar battery charger

Nanoamp operating current shunt Li-Ion battery charger

Energy SourcePart Number

LTC®3105

LTC3106

LTC3107

LTC3108

LTC3109

LTC3330/31

LTC3588

LT®3652/HV

LTC4070/71

Practical Ambient Energy Harvesting for WSNs

Single Nanopower ICs Manage Multiple Input Sources


LT8303 Telecom/Datacom Isolated Schematic

Output Load and Line Regulation

Features n Input Voltage Ranging from 2.7V to 400V n No Opto-Coupler Required n Primary-Side VOUT Sensing n Only One Part Crossing the Isolation Barrier n Internal Loop Compensation for Monolithic Required Devices n Compact Packages n Off-the-Shelf Transformers from Wurth, Sumida and Pulse Engineering

Applications n Telecom/Datacom n Industrial Controls n Automotive n Factory Automation n Heavy Equipment n Medical n Robotics and Aviation n Housekeeping Supplies

1.25cm

3cm

T16:1

150µH 4.2µH4.7µF

VIN6V TO 80V

VOUT+

5V

VOUT–

LT8303

RFB

SWEN/UVLO

VIN

GND

316k2.5mA TO 0.33A (VIN = 12V)2.5mA TO 0.52A (VIN = 24V)2.5mA TO 0.73A (VIN = 48V)2.5mA TO 0.84A (VIN = 72V)

•

•

100µF


LOAD CURRENT (mA)

0 100 200 300 400 500 600 700 800 9004.7

4.8

4.9

5.0

5.1

5.2

5.3

OUTP

UT V

OLTA

GE (V

)


LOAD CURRENT (mA)

0 100 200 300 400 500 600 700 800 90040

50

60

70

80

90

100

EFFI

CIEN

CY (%

)


LT8303 Demo Board Photo

SOT-23

1016

www.linear.com/830X n 1-800-454-6327

Description

400mA boost converter with MPP control and 250mV start-up

300mA buck-boost converter and power manager with MPPC

Ultralow voltage converter and primary battery life extender

Ultralow voltage boost converter and system manager

Auto-polarity version of LTC3108

Energy harvesting DC/DC converter with battery life extender

Piezoelectric energy harvesting power supply

Power tracking 2A solar battery charger

Nanoamp operating current shunt Li-Ion battery charger

Energy SourcePart Number

LTC®3105

LTC3106

LTC3107

LTC3108

LTC3109

LTC3330/31

LTC3588

LT®3652/HV

LTC4070/71

Practical Ambient Energy Harvesting for WSNs

Single Nanopower ICs Manage Multiple Input Sources


We offer a wide range of ultralow power products targeted for Energy Harvesting applications. Power management products that convert energy from Vibration (Piezo), PhotoVoltaic (Solar) and Thermal (TEC, TEG, Thermopiles, Thermocouples) sources provide high efficiency conversion to regulated voltages and charge batteries and/or super capacitor storage elements. These Energy Harvesting ICs automatically manage ambient and battery energy to dramatically extend the run time of a primary battery. Boost converters that operate from as little as 20mV or battery chargers with Maximum Power Point capability expand the possibilities for a wide variety of industrial automation and control, wireless sensor, transportation, automotive and building management applications.

Ultralow quiescent current linear regulators, op amps, comparators, voltage supervisors, analog-to-digital converters, digital-to-ana log converters and micropower voltage references provide additional fundamental building blocks required for autonomous systems.

Energy Harvesting

Part Number Description

Output Power Level

Number of

OutputsEnergy Source Packages Topology IQ

VIN MIN(V)

VIN MAX(V)

LTC3330 Nanopower Buck-Boost DC/DC with Energy Harvesting Battery

Life Extender

0.1mW to 50mW

2 Vibration, Solar (AC or DC)

5mm × 5mm QFN-32

Full Bridge Rectifier,

Buck

750nA 3.0V(EH) 1.8V(VBATT)

19V(EH) 5V(VBATT)

LTC3331 Nanopower Buck-Boost DC/DC with Energy Harvesting

Battery Charger

0.1mW to 50mW

1 Vibration, Solar (AC or DC)

5mm × 5mm QFN-32

Full Bridge Rectifier,

Buck

950nA 3.0V 19V

LTC3107 Ultralow Voltage Energy Harvester and Primary Battery Life Extender

0.01mW to 5mW

2 Thermal 3mm × 3mm DFN-10

Boost 80nA 20mV 500mV

LTC3106 300mA Ultralow IQ Step-Up Converter and Power Manager with MPPC

0.1mW to 160mW

2 Solar 3mm × 4mm QFN-20,

TSSOP-20E

Buck-Boost

1.5µA 330mV 5.5V

Energy Harvesting ICsLTC4071 Li-Ion/Polymer Shunt Battery

Charger System with Low Battery Disconnect

0.1mW to 250mW

1 − DFN-8, MSOP-8

Shunt Battery Charger

550nA None

LTC4070 Li-Ion/Polymer Shunt Battery Charger System

0.1mW to 250mW

1 − DFN-8, MSOP-8E

Shunt Battery Charger

450nA None

LTC3588-1/ LTC3588-2/ LTC3588-3

Piezoelectric Energy Harvesting Power Supply

0.1mW to 50mW

1 Piezoelectric MS-10, DFN-10

Buck 450nA 14 20

LTC3388-1/LTC3388-3

20V, High Efficiency Nano Step-Down Regulator

0.1mW to 250mW

1 All DFN-10, MS-10

Buck 400nA 2.7 20

LTC3526L 550mA 1MHz Synchronous Step-Up DC/DC Converters

in 2mm × 2mm DFN

0.1mW to 650mW

1 Solar DFN-6 Boost 9µA 0.5 5

LTC3109 Auto-Polarity, Ultralow Voltage Step-Up Converter

and Power Manager

0.1mW to 50mW

3 Thermoelectric QFN-20, SSOP-20

Boost 200nA 0.02 0.5

LTC3108/ LTC3108-1

Ultralow Voltage Step-Up Converter and

Power Manager

0.1mW to 50mW

3 Thermoelectric DFN-12, SSOP-16

Boost 200nA 0.02 0.5

LTC3105 400mA Step-Up DC/DC Converter with Maximum Power Point Control and

250mV Start-Up

0.1mW to 1100mW

1 Solar DFN-10, MS-12

Boost 24µA 0.2 5

LT3652HV Power Tracking 2A Battery Charger

1W to 30W 1 Solar DFN-12, MS-12

Buck 19µA 4.95 34

LT3652 Power Tracking 2A Battery Charger for Solar Power

1W to 30W 1 Solar DFN-12, MS-12

Battery Charger

19µA 4.95 32

Energy Harvesting ICs with Battery Life Extenders

0417 REV C

www.linear.com/energyharvesting n 1-800-454-6327

Design Note

165k

22nF

0.1µF100V×2

0.1µF

22µF

383k

4.7µF 100k

0.47µF

59.0k2.2nF

10k

110k

10k

0.1µF

124k75k

0.1µF

1µF 1µF

L11µH

M3

M4M1

M2

1µF

10Ω

10Ω

22µF

22µFD1 D2

5mΩR1

10mΩR2

EN/UVLO

VREF

CTRL

PGOOD

BG2

BST2

TG2

INTVCC

LOADEN

FB

VOUT

ISP

ISN

SYNC/SPRD

TEST

2MHz

63V

16V×2

ISMON

PGOOD

25V

VOUT12V4ALSP LSNSW1 SW2

BST1

TG1

BG1

VIN LT8390A

LOADTG

ISMON

SS VC RT

GND

SSFM OFF

SSFM ON

25V×2

INTVCCINTVCC

INTVCC

dn567 F01

VIN6V TO 28V

(CONTINUOUS)4V TO 60V

(TRANSIENT)4.7µF100V×2

L1: WURTH 74437336010 1µHM1, M2: INFINEON BSZ065NO6LS5M3, M4: INFINEON BSZ031NE2LS5D1, D2: NEXPERIA BAT46WJR1: SUSUMU KRL3216D-M-R005-F-T5

60V 2MHz Buck-Boost Controllers Regulate High Power Voltage and Current with High Efficiency and Low EMI Keith Szolusha

Synchronous buck-boost controllers are versatile and highly efficient. They can produce high power as both a boost and a buck with a single inductor, keeping power supply design simple. Normally, a buck-boost controller in a high power application is operated at a standard or low switching frequency, this maximizes efficiency and avoids complications related to shoot-through and switch blanking time, which can arise in synchronous rectification at high frequencies. Nevertheless, a high frequency 2MHz buck-boost controller with a smaller inductor ensures that the EMI content resides above the AM frequency band.

The LT8390A and LT8391A buck-boost controllers are unique in that they operate at 2MHz. The high switching speed enables use of a small inductor for a compact solution size, even in high power applications.

Unlike monolithic converters, which save space with power switches inside the IC package, controllers can drive external power switches with much higher peak currents,

such as 10A. Such high peak currents would burn up the small IC packages of typical integrated converters, but external 3mm × 3mm synchronous MOSFETs can handle this power. The MOSFETs can be arranged in tight quarters with hot-loop capacitors for very low EMI. The unique peak switch current sense amplifier architecture places the sense resistor next to the power inductor, outside the critical input and output hot loops, also reducing EMI.

2MHz, 95% Efficiency, 12V, 4A Buck-BoostThe 2MHz, 12V, 4A buck-boost regulator in Figure 1 boasts efficiency to 95%. This relatively compact design uses 3mm × 3mm MOSFETs and a single high power inductor. The temperature rise for this converter is low, even at 48W. At 12V input, no component rises more than 45°C above room temperature. At 7V input, the hottest component rises less than 55°C with a standard 4-layer PCB and no heat sink or airflow. This converter handles short input transients down to 4V at 4A load, or runs continuously at 4V input with 2A of load (~25W).

Figure 1. 2MHz 12V, 4A Buck-Boost Voltage Regulator with High Efficiency

10/17/567

All registered trademarks and trademarks are the property of their respective owners. Design Note 567

CONTINUOUS OPERATION WITH HIGHEST COMPONENT TEMPERATURE BELOW 90°C (TA = 25°C)

INPUT VOLTAGE (V)0 5 10 15 20 25 30 35 40

50

60

70

80

90

100

EFFI

CIEN

CY (%

)

dn567 F03

IOUT = 2A

IOUT = 4A

165k

22nF

4.7µF

0.1µF22µF

383k

4.7µF100k

0.47µF

113k

90.9k

59.0k

3.3nF

4.7k

1M54.9k

10µF

100k

0.1µF

1µF

1µF

L12.2µH

M3

M4M1

M2

D1 D2

6mΩR1

56mΩ

M5D3

300k488Hz

FB2

0.1µF

FB1

4.7µF

0.1µF

10Ω

D5

10Ω

D4

EN/UVLO

VREF

CTRL1

FAULT

BG2

BST2

TG2

INTVCC

FB

VOUT

ISP

ISN

SYNC/SPRD

VIN6V TO 40V

(CONTINUOUS)4V TO 60V

(TRANSIENT)

2MHz

63V

100V×2+0.1µF×2

25V×2+0.1µF×2

FAULT

LSP LSNSW1 SW2BST1

TG1

BG1

VIN

LT8391A

SS VC RT

GND

SSFM OFF

SSFM ON

INTVCCINTVCC

INTVCC

PWMTG

PWM

RPCTRL2

ANALOG DIM

PWM DIM

100V×2

16V1.5ALEDs

INPUT EMI FILTER

OUTPUT EMIFILTER

dn567 F02

5.1Ω

5.1Ω

INTERNAL PWM

L1: COILCRAFT XAL5030-222MEBM1, M2: NEXPERIA BUK9M42-60EM3, M4: INFINEON IPZ40N04S5L-7R4M5: NEXPERIA PMV50EPEAD1, D2: NEXPERIA BAT46WJD3: NEXPERIA PMEG3010EBD4, D5: NEXPERIA PMEG2010AEBFB1: 2× PARALLEL TDK MPZ2012S221ATD25FB2: 2× PARALLEL TDK MPZ2012S102ATD25R1: SUSUMU KRL3216D-C-R006-F

Figure 2. Low EMI 16V, 1.5A Automotive Buck-Boost LED Driver Passes CISPR 25 Class 5 EMI

The LT8390A’s high switching frequency (600kHz to 2MHz) distinguishes it from the field of 4-switch controllers. It also has a variety of notable features like its lower frequency cousin, the LT8390. It has a PGOOD flag, short-circuit protection, and a flexible current-limiting sense resistor for output or inrush current restrictions. Its spread spectrum frequency modulation (SSFM) for low EMI makes it ideal for automotive applications.

2MHz Low EMI Automotive Buck-Boost LED DriverThe LT8391A is a 2MHz LED driver counterpart of the LT8390A. The main difference is that LT8391A includes LED driver PWM dimming features and open LED fault protection. The output sense resistor controls current through a string of LEDs whose voltage may lie within the input voltage range, such as the 9V to 16V car battery. It can run down to 4V cold crank and can withstand up to 60V input transients. LT8391A provides up to 2000:1 PWM dimming ratio at 120Hz and it can use its internal PWM dimming generator (no external clock required) for up to 128:1 accurate dimming.

The 2MHz LT8391A LED driver shown in Figure 1 is optimized for automotive headlights. It uses AEC-Q100 components and meets CISPR 25 Class 5 radiated EMI standards. SSFM reduces EMI, and also runs flicker-free simultaneously with PWM dimming.

This compact design features a small inductor and especially small input and output EMI filters. It can run down to 4V and up to 60V. The four synchronous MOSFETs shown can be replaced with two dual MOSFETs for reduced component count when needed. It reaches 93% efficiency. The FAULT flag reports short-circuit and open LED conditions, which are handled with ease.

ConclusionThe LT8390A and LT8391A 2MHz 60V buck-boost controllers can regulate high power voltage and current in compact spaces. The low EMI architecture and SSFM feature make these ideal for low EMI applications.

Figure 3. LT8390A Efficiency of Figure 1

© ANALOG DEVICES, INC. 2017

DN567 LT/AP 1017 71K • PRINTED IN THE USA

Data Sheet DownloadFor applications help, call (408) 432-1900www.linear.com/LT8390A

Cool Running, 144W, 4 × 40A µModule POL Regulator

IntroductionThe LTM®4636 is a 40A-capable µModule® regulator featuring 3D packaging technology, or component-on-package (CoP) to keep it cool—see Figure 1. The body of the device is an overmolded 16mm × 16mm × 1.91mm BGA package with an inductor stacked on top to expose it to cooling airflow. The total package height is 7.16mm.

In addition to dissipating heat from the top through the exposed inductor, the LTM4636 efficiently disperses heat to the PCB via 144 BGA solder balls dedicated to GND, VIN and VOUT—where high current flows.

A single LTM4636 is rated for 40A loads; two parallel converters can support 80A; four support 160A. Upscaling a power supply by paralleling LTM4636s is easy: simply copy and paste the single-regulator footprint, as shown in Figure 1.

The current mode architecture of the LTM4636 enables precision current sharing among the 40A blocks. Precise current sharing, in turn, produces a power supply that spreads the heat evenly between devices. Figure 2 shows that all devices in the 4-µModule 160A regulator operate within 1°C of each other, ensuring that no individual device is overloaded or overheated. This greatly simplifies heat mitigation.

Figure 3 shows the complete 160A design. Note that no clock device is required for the LTM4636s to operate out-of-phase to each other—clocking and phase control is included. Multiphase operation reduces input and output ripple current, reducing the number of required input and output capacitors. Here, the four LTM4636s run 90° out-of-phase.

ConclusionChoosing a POL regulator for a densely populated system requires scrutiny beyond voltage and amperage ratings of the device. Evaluation of package thermal characteristics is essential, as it determines the cost of cooling, the cost of the PCB and final product size.

10/17/569


Figure 1. 3D Packaging of the LTM4636 Puts One of the Hottest Components, the Inductor, on Top, Where Significant Surface Area Is Exposed to Airflow. It Is Easy to Lay Out Parallel LTM4636s to Scale Power Capability—Simply Duplicate the Layout of One Channel and Multiply. The Clean Layout Here Shows Four Channels at 40A Each.

Design Note 569

Design NoteAfshin Odabaee and Yan Liang

Figure 2. Precision Current Sharing Among Four LTM4636s Running in Parallel, Resulting in Only 40°C Rise in Temperature for 160A Application.

DN529 F01

VIN = 12V, VOUT = 0.9V, IOUT = 160A Airflow = 400LFM Efficiency = 88%

DN529 F02

+

COMPACOMPBTK/SS

RUNCRUNPHIZREG

PHMODEFREQMODE/PLLINCLKOUT

TMON

PWM

SW

VOUT

TEMP+ TEMP– SNSP1 SNSP2 SGND

VIN

34.8k

22µF

VOLTAGE OUTTEMP MONITOR

22µF16V

22µF16V

22µF16V

22µF16V

150µF35V

7V TO 14V

12V

12V

12V

INTVCC2

RUNCRUNP

CLK2CLK1

COMPTK/SS

OPTIONAL TEMP MONITORFOR TELEMETRY READBACK ICs

INTVCC

INTVCC2 5V PVCC2

U2LTM4636

PVCC

PGND

VFB

VOUTS1–

VFB POWER GND

PWM2 TP

470µF6.3V+

470µF6.3V

100µF6.3V×4

GND_SNS

2.2Ω, 08052200pF

2200pF

VOUT

+

COMPACOMPB

TK/SS

RUNCRUNPHIZREG

TMON

PWM

SW

VOUT


VIN

34.8k

4.99k

5VPVCC1

22µF


CSS0.47µF

0.47µFINTVCC1

RUNCRUNP

CLK1

COMPTK/SS


INTVCC

INTVCC1 5V PVCC1

U1LTM4636

PVCC

PGND

VFBVFB

PWM1 TP

470µF6.3V

RFB2.5k

+470µF6.3V

100µF6.3V×4

VOUTS1–

VOUTS1+

2.2Ω, 0805

0.9VAT160A

+

COMPACOMPBTK/SS

RUNCRUNPHIZREG


TMON

PWM

SW

VOUT


VIN

34.8k

22µF

GND_SNS


INTVCC3

RUNCRUNP

CLK3CLK2

TK/SS

COMP


PINS NOT USED IN CIRCUIT U2: PGOOD, TEST1, TEST2, TEST3, TEST4, VOUTS1, GMON

PINS NOT USED IN CIRCUIT U1: PGOOD, TEST1, TEST2, TEST3, TEST4, GMON



INTVCC

INTVCC3 5V PVCC3

U3LTM4636

PVCC

PGND

VFB VFB

PWM3 TP

470µF6.3V+

470µF6.3V

100µF6.3V×4

GND_SNS

2.2Ω, 08052200pF

+

COMPACOMPBTK/SS

RUNCRUNPHIZREG

PHMODEFREQMODE/PLLIN

TMON

PWM

SW

VOUT


VIN

34.8k

22µF


INTVCC4

RUNCRUNP

CLK3

COMPTK/SS


INTVCC

INTVCC4 5V PVCC4

U4LTM4636

PVCC

PGNDVFB

VOUTS1–

VFB

PWM4 TP

470µF6.3V+

470µF6.3V

100µF6.3V×4GND_SNS

2.2Ω, 08052200pF

100pF

VOUTS1–

+

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V

22µF16V


SGND

SGND

SGND

SGND

SGNDSGND

SGND

SGND

SGND

SGND

SGND

SGND

SGND

SGND

SGND

DN569 F03

© ANALOG DEVICES, INC. 2017

DN569 LT/AP 1017 305K • PRINTED IN THE USA

Data Sheet Downloadwww.linear.com/LTM4636 For applications help, call (408) 432-1900

Figure 3. 140W Regulator Features Four LTM4636s Running in Parallel with Precision Current Sharing and High Efficiency 12V Input to 0.9V Output at 160A

More Info Features

, LT, LTC, LTM, Linear Technology, the Linear logo,and µModule are registered trademarks of Analog Devices, Inc. All other trademarks are the property of their respective owners.

www.linear.com/product/LTC78201-800-4-LINEAR

• VIN Range: 6V to 72V, 80V abs max• Voltage Divider (2:1)/Doubler (1:2)/

Inverter (1:-1)• High Power Density: Up to 4000W/in3

• Capable of 500W+• Soft Switching – Low EMI• Overload, OV/UV Protection• Fault Protection/Programmable Timer• Operating Frequency: 100kHz to 1MHz• 4mm x 5mm QFN-28 Package


OUTPUT LOAD CURRENT (A)

EFFI

CIEN

CY (%

)

100

99

98

97

96

95

94

93

920 2 4 6 8 10 12 14 16 18 20

48V to 24V

The LTC7820 brings a new level of performance and simplicity to fixed ratio non-isolated bus converters by eliminating the power inductor, providing a 50% reduction in circuit size compared to alternative solutions. It drives external MOSFETs in either a voltage divider (2:1), doubler (1:2) or inverter (1:-1) configuration with up to 99% efficiency and a power density of up to 4000W/in3. Multiple LTC7820s can be cascaded for higher conversion ratios. Its open loop fixed duty cycle is ideal for non-isolated intermediate bus applications commonly found in power distribution, datacom, telecom, computing and industrial systems.

500WInductorless Bus Converter

99% Efficient Step-Down, Step-Up or Invert


28mm

6mm28mm

Top Bottom Side

No Airflow

No Heat Sink

© 2017 Analog Devices, Inc. • MC 1217 7.5K • Printed in U.S.A

NEW POWER - analog.com · Visit analog.com and linear.com December 2017 NEW POWER MANAGEMENT PRODUCTS LTC2992 Dual Wide Range Power Monitor LT3964 Dual 36V Synchronous 1.6A Buck LED

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