Copyright

© ANPEC Electronics Corp.

Rev. A.5 - Apr., 2009

APL3200

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.

Dual-Input, USB/AC Adapter, 1-Cell

Li+ Charger with OVP and Thermal Regulation

•

Charge from USB or AC Adapter

•

Accurate BATT Regulation Voltage

•

Programmable DC Charging Current

•

Selectable USB Charging Current (Either 100mA

or 500mA)

•

Thermal Regulation for Simplified Board Design

•

Input Protection Up to 18V

•

Soft-Start

•

External Thermistor Monitoring

•

Charge Shutdown Control

•

Charge Status Outputs

•

DC and USB Power-OK Indicators

•

Small, High Power QFN5x5-16 and TQFN4x4-16

Packages

•

Lead Free and Green Devices Available

(RoHS Compliant)

The APL3200 charges a single-cell Li+ battery from both

USB and AC adapter sources. It also includes battery-

to-input power switchover, therefore, the system can be

powered directly from the power source rather than from

the battery.

In its simplest application, the APL3200 doesn’t need

external MOSFET or diodes and accepts input voltages

up to 6.5V; however, DC input over-voltage protection up

to 18V can be added with a single SOT PFET.

On-chip thermal limiting simplifies PC board layout and

allows optimum charging rate without the thermal

limits imposed by worst-case battery and input voltage.

When the APL3200 thermal limit is reached, the charger

does not shut down but simply reduces charging current.

Ambient or battery temperature can be monitored with

an external thermistor. When the temperature is out of

range, charging pauses.

Other features include STAT 1 and STAT 2 outputs

indicating various charge status. DC power-OK (DCOK),

USB power-OK (UOK), and poweron (PON) outputs

indicate when valid power is present. These outputs drive

logic or power-selection MOSFETs to disconnect the

charging sources from the load and to protect the APL3200

from overvoltage. The APL3200 doesn’t contain logic for

communication with the USB host. It must receive

instructions from a local microcontroller. The APL3200

is available in 16-pin 5mmx5mm QFN and 4mmx4mm

TQFN packages and operates over the -40

°C to +85°C

temperature range.

Features

General Description

Applications

•

Smart Phones and PDAs

•

Wireless Appliances

•

Digital Still Camera

•

Internet Appliances

Pin Configuration

APL3200

(Top View)

BYP

USEL

STAT1

DC

DCLV

USB

STAT2

REF

12

11

10

9

2

3

4

1

5

6

7

8

15

14

13

16

GND

(Bottom)