Electric Cigarette HT45F3420 Characteristics ► Constant Current Control – CC ► LED simulates burning cigarette ► No second hand smoke problems ► Environmentally friendly ► Avoid fire accidents ► Over Current Protection – OCP ► Over Voltage Protection – OVP Application Areas 2015 Holtek New Product Presentation D03
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Electric Cigarette HT45F3420
Characteristics
► Constant Current Control – CC
► LED simulates burning cigarette
► No second hand smoke problems
► Environmentally friendly
► Avoid fire accidents
► Over Current Protection – OCP
► Over Voltage Protection – OVP
Application Areas
2015 Holtek New Product Presentation D03
Block Diagram
2015 Holtek New Product Presentation D03
Application Circuit
OVP Circuit
HT45F3420
Boost/Buck Circuit
Power Circuit Master MCU
Charger Detector
Indicator & Key OCP Circuit
Power Circuit
Charger/Load Connector
OVP
INT
I/O
A/D
OCP
A/D
H.R. PWM
Boost/Buck Circuit
MCU HT45F3420
Key
Li-ion
VBAT Sense
Current Sense
Constant Voltage VR
Charger/Load Connector
Indicator
Voltage Sense
Charger Detector
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