AAT3680 View Datasheet(PDF) - Advanced Analog Technology, Inc.

Part Name

Description

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AAT3680

Lithium-Ion/Polymer Linear Battery Charge Controller

Advanced Analog Technology, Inc. 

General Description

The AAT3680 BatteryManager is a member of

AnalogicTech's Total Power Management IC™

(TPMIC™) product family. This device is a lithium-

ion/polymer battery charge and management IC,

specifically designed for compact portable applica-

tions. The AAT3680 precisely regulates battery

charge voltage and charge current, and is capable

of two trickle charge current levels controlled by

one external pin. Battery charge temperature and

charge state are carefully monitored for fault con-

ditions. In the event of an over-current, short-cir-

cuit, or over-temperature failure, the device will

automatically shut down, protecting the charging

device and the battery under charge. A battery

charge state monitor output pin is provided to indi-

cate the battery charge status through a display

LED. The battery charge status output is a serial

interface which may also be read by a system

microcontroller.

The AAT3680 is available in a Pb-free, 8-pin MSOP

or 12-pin TSOPJW package, specified over the

-20°C to +70°C temperature range.

AAT3680

Lithium-Ion/Polymer

Linear Battery Charge Controller

BatteryManager™

Features

• Input Voltage Range: 4.5V to 7V

• 1% Accurate Preset Voltages: 4.1V, 4.2V

• Low Operation Current, Typically 0.5mA

• Programmable Charge Current

• Automatic Recharge Sequencing

• Battery Temperature Monitoring

• Deep Discharge Cell Conditioning

• Fast Trickle Charge Option with Thermal

Over-Ride

• Full Battery Charge Auto Turn-Off / Sleep Mode

• Over-Voltage, Over-Current, and Over-

Temperature Protection

• Power On Reset

• LED Charge Status Output or System

Microcontroller Serial Interface

• Temperature Range: -20°C to +70°C

• 8-Pin MSOP or 12-Pin TSOPJW Package

Applications

• Cellular Phones

• Desktop Chargers

• Personal Digital Assistants (PDAs)

• USB Chargers

Typical Application

RSENSE

Q1

0.2Ω

FZT968

VP

SMA

B34DLA

R1

1.9k

DRV

T2X

BATT+

C2

1µF

VP

BATT-

CSI

BAT

RT1

AAT3680

VP

TS

C3

10µF

VSS

STAT

TEMP

RT2

LED1

R2

1k

Battery

Pack

3680.2006.03.1.6

1

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