Datasheet > AAT3685_08

AAT3685_08

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		电池
页数	文件大小	规格书
21页	383K
描述
Lithium-Ion/Polymer Battery Charger

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AAT3685_08 数据手册

PRODUCT DATASHEET

AAT3685

BatteryManager^TM

Lithium-Ion/Polymer Battery Charger

General Description

Features

The AAT3685 BatteryManager™ is a highly integrated

singlecelllithium-ion/polymerbatterychargerICdesigned

to operate with USB port or line adapter inputs. It

requires the minimum number of external components.

• Adapter or USB Charger

Programmable up to 1A Max

• 4.0V to 5.5V Input Voltage Range

▪

• High Level of Integration With Internal:

Charging Device

Reverse Blocking Diode

Current Sensing

▪

The AAT3685 precisely regulates battery charge voltage

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

Regardless of the type of input power source (USB or

adapter), the AAT3685 can be programmed for two

separate constant current charge levels up to 1A. An

optional Charge Reduction Loop is built in to allow users

to charge the battery with available current from the

charge supply, while keeping the port voltage regulated.

▪

• Automatic Recharge Sequencing

• Charge Reduction Loop

• Battery Temperature Monitoring

• Full Battery Charge Auto Turn-Off

• Over-Voltage Protection

• Emergency Thermal Protection

• Power On Reset and Soft Start

• Serial Interface Status Reporting

• 12-Pin 3x3mm TDFN Package

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. A

serial interface output is available to report any one of

14 various status states to a microcontroller.

Applications

• Cellular Telephones

• Digital Still Cameras

• Hand-Held PCs

• MP3 Players

• Personal Data Assistants (PDAs)

• Other Lithium-Ion/Polymer Battery-Powered Devices

The AAT3685 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.

Typical Application

Enable

ADP/USB EN CHR

Adapter or USB Input

Input Hi/Lo Select

PWRSEL

SETH

BATT+

BAT

10µF

R_SETH

SETL

AAT3685

R_SETL

BATT-

GND

DATA

TEMP

STAT1

STAT2

Battery Pack

Serial Data

w w w . a n a l o g i c t e c h . c o m

3685.2007.12.1.4

12 3 4 5 6 7...21

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