Copyright

© ANPEC Electronics Corp.

Rev. A.2 - Nov., 2009

APL3208A/B/C

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+ Charger Protection IC with Integrated P-MOSFET

450mA, 550mA, 650mA

(RoHS Compliant)

Features

Applications

General Description

Simplified Application Circuit

The APL3208A/B/C provides complete Li+ charger pro-

tection against Input over-voltage, battery over-voltage,

and the charge current limit. When the input OVP or the

battery OVP is over the threshold, the IC removes the

power from the charging system by turning off an internal

switch. When the current via the internal switch surpasses

the current limit threshold, the current will be clamped in

a constant level to provide a constant current for battery

charging usage. All protections also have deglitch time

against false triggering due to voltage spikes or current

transients.

The APL3208A/B/C integrates a P-MOSFET with the body

diode reverse protection to replace the external power

bipolar transistor and Schottky diode for charger function

of the Infineon ULC2 mobile phones. When the CHG_DET

voltage drops below V

lect circuit will reverse the body diode’s terminal to pre-

vent a reverse current flowing from the battery back to the

CHG_DET pin.

The APL3208A/B/C provides complete Li+ charger pro-

tections and save the external MOSFET and Schottky di-

ode for the Infineon ULC2 mobile phones. The above

features and small package make the APL3208A/B/C an

ideal part for cell phones applications.

Pin Configuration

R

= Exposed Pad

(Connected to the ground plane for better heat

dissipation)

EP

TDFN2x2-8

(Top View)

EP

ACIN 1

GND 3

ACIN 2

VBAT 4

8 OUT

7 OUT

5 CHG_SW

6 CHG_DET

ACIN CHG_DET

VBAT

GND

APL3208A/B/C

Li+

Battery

CHG_SW

OUT

5V Adapter

or USB

V

CHG_DET

CHG_SW

4 VBAT

6 ACIN

CHG_DET 2

5 GND

CHG_SW 3

OUT 1

TSOT-23-6A

(Top View)