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