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family. This device is an advanced Lithium-Ion (Li-

Ion) battery charge and management IC, specifi-

cally designed for low cost compact portable appli-

cations. In a single 8-pin package, the AAT3680

precisely regulates battery charge voltage and

charge current. This device is capable of two trick-

le charge current levels controlled by one external

pin. Battery charge temperature and charge state

are carefully monitored for fault conditions. In the

event of an over current, short circuit or over tem-

perature failure, the device will automatically shut

down, thus protecting the charging device and the

battery under charge. A battery charge state mon-

itor output pin is provided to indicate the battery

charge status though 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 an 8-pin MSOP or 12-

pin TSOPJW package, specified over -20 to 70擄C

range.

AAT3680

Features

鈥?/div>

BatteryManager

鈩?/div>

4.5V to 15V Input voltage range

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

8.2V, 8.4V

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, current and temperature

protection

Power on reset

LED Charge Status Output or System

Microcontroller serial interface

Temperature range -20 to 70擄C

8 pin MSOP, 12 pin TSOPJW package

Preliminary Information

Applications

鈥?/div>

Cellular Phones

Personal Digital Assistants (PDA's)

Desktop Chargers

USB Chargers

Typical Application

VP

R

SENSE

0.2鈩?/div>

Q1

FZT788B

BATT+

C2

10碌F

R1

2.5k

DRV

T2X

VP

CSI

BAT

BATT-

AAT3680

VP

TS

RT1

TEMP

VSS

C1

4.7碌F

D1

RT2

STAT

Battery

Pack

R2

1k

3680.2003.4.0.91

1

型號(hào)

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描述

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