Datasheet > AAT3688_08

AAT3688_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	379K
描述
USB Port Lithium-Ion/Polymer Battery Charger

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AAT3688_08 数据手册

PRODUCT DATASHEET

AAT3688

BatteryManager^TM

USB Port Lithium-Ion/Polymer Battery Charger

General Description

Features

The AAT3688 BatteryManager™ is a highly integrated

single cell lithium-ion/polymer battery charger IC

designed to operate with USB port inputs. It requires the

minimum number of external components.

• USB Charger

Programmable up to 500mA Max

• 4.0V to 5.5V Input Voltage Range

▪

• High Level of Integration With Internal:

Charging Device

Reverse Blocking Diode

Current Sensing

▪

The AAT3688 precisely regulates battery charge voltage

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

Depending on the USB port type, the AAT3688 charge

current can be programmed for two separate levels up

to 500mA. An optional Charge Reduction Loop is built in

to allow users to charge the battery with available cur-

rent from a USB port, while keeping the port voltage

regulated.

▪

• Automatic Recharge Sequencing

• Charge Reduction Loop for USB Charging

• 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

• Bluetooth™ Headsets

• Cellular Telephones

• Digital Still Cameras

• Hand-Held PCs

• MP3 Players

• Personal Data Assistants (PDAs)

• Other Lithium-Ion/Polymer Battery-Powered Devices

The AAT3688 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

USB

EN CHR

USB Input

USBSEL

USBH

USB Hi/Lo Select

BATT+

BAT

10µF

R_SETH

USBL

AAT3688

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

3688.2007.12.1.6

12 3 4 5 6 7...21

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