APL3202B Просмотр технического описания (PDF) - Anpec Electronics

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APL3202B

Li+ Battery Charger with Thermal Regulation

Anpec Electronics 

APL3202

Pin Description

PIN

NO.

NAME

1

STAT

2

GND

3

BATT

4

VIN

5

ISET

Enable in Charge Done

FUNCTION

Open-Drain Charge Status Output Pin. When the battery is charging, the STAT pin is pulled low by

an internal switch. In other states the STAT pin is in a high impedance state.

Ground.

Charger Output Pin. Connect this pin to the positive terminal of a Li+ battery.

Input Supply Pin. Provides power to the charger, VIN can range from 4.35V to 6.5V and should be

bypassed with a 4.7µF capacitor.

Charging Current Setting and Shutdown Pin. Connecting a resistor from this pin to GND to set the

charge current. Disconnecting the RSET from GND allows an internal 2.5µA current to pull the ISET

pin high, and when the ISET pin voltage exceeds the shutdown threshold voltage, the IC enters

shutdown mode.

Block Diagram

VIN

UVLO

Thermal

Regulation

Constant Voltage

Loop Amp.

Charge Control Circuit

1.21V

BATT

STAT

VIN

2.5µA

Pre-charge

Comp.

GND

2.9V

1.21V

ISET

Constant

Current

Loop Amp.

1V

0.1V

Copyright © ANPEC Electronics Corp.

9

Rev. A.3 - Mar., 2012

www.anpec.com.tw

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