AAT3689(2007) 데이터 시트보기 (PDF) - Advanced Analogic Technologies

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AAT3689
(Rev.:2007)

0.5A/1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger

Advanced Analogic Technologies 

BatteryManagerTM

PRODUCT DATASHEET

AAT3689

0.5A/1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger

General Description

The AAT3689 BatteryManager is a highly integrated sin-

gle cell lithium-ion/polymer battery charger IC designed

to operate with USB port and AC adapter inputs. It

requires a minimum number of external components.

The AAT3689 precisely regulates battery charge voltage

and current for 4.2V lithium-ion/polymer battery cells.

Adapter charge current rates may be programmed up to

1.0A. In the absence of an adapter and with a USB port

connected, the battery can also be charged by USB

power. The USB charge current can be programmed up

to 500mA. USB charging is disabled when an adapter is

present.

Battery temperature and charge state are fully moni-

tored for fault conditions. In the event of an over-volt-

age or over-temperature failure, the device will auto-

matically shut down, thus protecting the charging device,

control system, and the battery under charge. Status

monitor output pins are provided to indicate the battery

charge status by directly driving two external LEDs.

The AAT3689 is available in a Pb-free, thermally-enhanced,

space-saving 12-pin 3x3mm TDFN package and is rated

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

Features

• USB/AC Adapter System Power Charger

▪ USB: Programmable up to 500mA

▪ Adapter: Programmable up to 1.0A

• 4.0V to 5.5V Input Voltage Range

• Adapter Presence Automatically Disables USB Charging

• High Level of Integration With Internal:

▪ Charging Devices

▪ Reverse Blocking Diodes

▪ Current Sensing

• Automatic Recharge Sequencing

• Battery Temperature Monitoring

• Full Battery Charge Auto Turn-Off

• Over-Current Protection

• Over-Voltage Protection

• Emergency Thermal Protection

• Power On Reset and Soft Start

• 12-Pin 3x3 TDFN Package

Applications

• Cellular Telephones

• Digital Still Cameras

• Hand-Held PCs

• MP3 Players

• Personal Data Assistants (PDAs)

• Other Lithium-Ion/Polymer Battery-Powered Devices

Typical Application

Enable

USB Input

EN

USB

BAT

BATT+

RSETUSB

USBSET

TS

AAT3689 CT

C2

10μF

BATT-

ADP Input

CT

ADP

GND

ADPSET

RSETADP

STAT1

STAT2

TEMP

Battery Pack

3689.2007.12.1.1

www.analogictech.com

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