AAT3663 datasheet(1/22 Pages) ANALOGICTECH | 1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications

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AAT3663

1A Linear Li-Ion Battery Charger

for Single and Dual Cell Applications

Typical Application

VIN

RTERM

ADPP#

ON/OFF

TERM

GND

BAT

STAT2

RSET

ISET

STAT1

10μF

BATT-

Battery

Pack

BATT+

TEMP

BATS

AAT3663

3663.2007.10.1.0

BatteryManager™

General Description

The AAT3663 BatteryManager

™ is a member of

AnalogicTech’s Total Power Management IC

™

family. This device is an integrated single/dual cell

Lithium-Ion (Li-Ion) / polymer battery charger IC

designed to operate from USB ports or an AC

adapter inputs up to an input voltage of 13.2V.

AAT3663 precisely regulates battery charge volt-

age and current for 4.2V and 8.4V Li-Ion battery

cells. The battery charging current is user pro-

grammed up to 1A by an external resistor.

Battery charge state is continuously monitored for

fault conditions. A Digital Thermal Loop Control

maintains the maximum possible battery charging

current for the optimum set of input to output power

dissipation and ambient temperature conditions. In

the event of an over-current, over-voltage, short-

circuit, or over-temperature fault condition, the

device will automatically shut down, thus protecting

the charger and the battery under charge.

Two status monitor output pins are provided to indi-

cate the battery charge status by directly driving

external LEDs. Additionally, an open-drain power-

source detection output (ADPP#) is provided to

report presence of an input power supply

The AAT3663 is available in a thermally enhanced,

space-saving, 14-pin 3x3 mm TDFN package and

is specified for operation over the -40°C to +85°C

temperature range.

Features

•

4.0V ~ 13.2V Input Voltage Range

•

Compatible with USB or AC Adapter Sources

•

Programmable Fast Charge Current from

100mA to 1A

•

Programmable Charge Termination Current

•

Digital Thermal Loop Charge Reduction

•

Less Than 0.4µA Battery Leakage Current

•

Programming Charge Timer

•

Battery Temperature Sensing

•

Battery Temp Sense Open Circuit Detection

•

Automatic Recharge Sequencing

•

Automatic Trickle Charge for Battery

Pre-Conditioning

•

Automatic Charge Termination

Shutdown/Sleep Mode

•

Less than 1µA Shutdown Current

•

Over-Voltage and Over-Current Protection

•

Power On Reset and Soft Start

•

3x3mm 14-pin TDFN Package

Applications

•

Bluetooth™ Headset

•

Cell Phones

•

Digital Still Cameras

•

MP3 Players

•

Personal Data Assistants (PDAs)

•

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