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APL3204B

Li+ Charger Protection IC

Anpec Electronics 

APL3204A/B

Li+ Charger Protection IC

Features

• Input Over-Voltage Protection

• Programmable Input Over-Current Protection

• Battery Over-Voltage Protection

• Over-Temperature Protection

• High Immunity of False Triggering

• High Accuracy Protection Thresholds

• Fault Status Indication

• Enable Input

• Available in TDFN4x3-12 Package

• Lead Free and Green Devices Available

(RoHS Compliant)

General Description

The APL3204A/B provide complete Li+ charger protec-

tions against over-voltage, over-current, and battery over-

voltage. The IC is designed to monitor input voltage, in-

put current, and battery voltage. When any of the moni-

tored parameters are over the threshold, the IC removes

the power from the charging system by turning off an in-

ternal switch. All protections also have deglitch time

against false triggering due to voltage spikes or current

transients. The APL3204A/B also provide over-tempera-

ture protection, a FAULT output pin to indicate the fault

conditions, and the EN pin to allow the system to disable

the IC.

Simplified Application Circuit

5V Adapter or USB

IN

OUT

APL3204A/B

Charger Input

Applications

• Smart Phones and PDAs

• Digital Still Cameras

• Potable Devices

EN

FAULT

ILIM

BAT

GND

Charger Output and Pin Configuration

System

Li+ Battery

IN 1

IN 2

GND 3

EP

FAULT 4

NC 5

NC 6

12 NC

11 OUT

10 OUT

9 ILIM

8 BAT

7 EN

TDFN4X3-12 (Top View)

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.

Copyright © ANPEC Electronics Corp.

1

Rev. A,1 - Jun, 2008

www.anpec.com.tw

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