Datasheet > AAT3685

AAT3685

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
23页	455K
描述
Lithium-Ion/Polymer Battery Charger

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AAT3685 数据手册

AAT3685

Lithium-Ion/Polymer Battery Charger

™

BatteryManager

General Description

Features

The AAT3685 BatteryManager™ is a member of

AnalogicTech's Total Power Management IC™

(TPMIC™) product family. This device is a highly

integrated single cell lithium-ion/polymer battery

charger IC designed 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

•

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

TheAAT3685 precisely regulates battery charge volt-

age 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 cur-

rent from the charge supply, while keeping the port

voltage regulated.

Battery temperature and charge state are fully

monitored for fault conditions. In the event of an

over-voltage or over-temperature failure, the

device will automatically shut down, thus protecting

the charging device, control system, and the bat-

tery 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 tem-

perature range.

Typical Application

Enable

ADP/USB EN CHR

PWRSEL

Adapter or USB Input

Input Hi/Lo Select

BATT+

SETH

SETL

BAT

10µF

R_SETH

AAT3685

R_SETL

BATT-

GND

DATA

TEMP

STAT1

STAT2

Battery Pack

Serial Data

3685.2006.02.1.2

12 3 4 5 6 7...23

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