Copyright

© ANPEC Electronics Corp.

Rev. A.3 - Mar., 2012

APL3202

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

Li+ Battery Charger with Thermal Regulation

•

Programmable Charge Current Up to 500mA

•

Charge Status Output Pin

•

Soft-Start Limits Inrush Current

•

4.2V Charge Termination Voltage with

±1%

Accuracy

•

45mA Pre-charge Current (R

•

Thermal Regulation Simplifies Board Design

•

Enable/Disable Control

•

Available in a SOT-23-5 Package

•

Lead Free and Green Devices Available

(RoHS Compliant)

The APL3202 is a constant-current/constant-voltage lin-

ear charger for single cell Li+ batteries. The APL3202

needs no external MOSFETs or diodes, and accepts in-

put voltages up to 6.5V. The small package and low ex-

ternal component counts make the APL3202 an idea part

for portable applications.

Features

General Description

Applications

•

Bluetooth Applications

•

MP3 Players

•

Cell Phones

•

Wireless Appliances

Pin Configuration

On-chip thermal regulation protects the APL3202 from

excessive temperature and optimizes the board design

for compact size and typical thermal conditions. When

the junction temperature reaches the thermal regulation

threshold, the charger does not shut down but simply

reduces the charge current. Charge current can be pro-

grammed by connecting an external resistor from ISET

pin to GND. Using an external MOSFET to disconnect the

resistor from ground shuts down the charger, and re-

duces the input supply current down to 25

µA. The

APL3202 also has the STAT pin to indicate charge status.

The APL3202 is available in a SOT-23-5 package, and

operates over the -40°C to +85°C temperature range.

Simplified Application Circuit

VIN

ISET

STAT

BATT

GND

APL3202

Li+

Battery

5V

Adapter

GND 2

5 ISET

BATT 3

4 VIN

STAT 1

SOT-23-5

(Top View)

APL3202