Datasheet > AAT3681

AAT3681

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
15页	308K
描述
USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger

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AAT3681 数据手册

AAT3681

USB Port or AC Adapter

Lithium-Ion/Polymer Battery Charger

™

BatteryManager

General Description

Features

The AAT3681 BatteryManager is a member of

AnalogicTech's Total Power Management IC™

(TPMIC™) product family. This product is an inte-

grated single cell lithium-ion/polymer battery charg-

er IC, designed to operate from a DC power source

or USB port up to an input voltage of 6.5V. It requires

just one external component.

•

USB or AC Adapter System Power Charger

— Programmable from 15mA to 300mA

4.0V ~ 6.5V Input Voltage Range

High Level of Integration with Internal:

— Charging Device

— Reverse Blocking Diode

Automatic Current Sensing

Automatic Recharge Sequencing

Full Battery Charge Auto Turn Off/Sleep

Mode/Charge Termination

•

The AAT3681 precisely regulates battery charge

voltage and current for 4.2V (4.375V option) lithium-

ion/polymer battery cells. When charged from an

AC adapter or USB port, the battery charging cur-

rent can be set by an external resistor up to 300mA.

•

Shutdown Current <1µA

Automatic Trickle Charge for Battery Pre-

Conditioning

Battery charge state is continuously monitored for

fault conditions. In the event of an over-voltage,

short-circuit, or over-temperature failure, the

device will automatically shut down, thus protecting

the charging device, control system, and the bat-

tery under charge. A status monitor output pin is

provided to indicate the battery charge status by

directly driving an external LED.

•

Over-Voltage and Emergency Thermal

Protection

Power On Reset and Soft Start

LED Status Pin

•

8-Pin 2.0x2.1mm SC70JW Package

Applications

The AAT3681 is available in a Pb-free, thermally

enhanced, space-saving 8-pin 2.0x2.1mm SC70JW

package and is specified for operation over the

-40°C to +85°C temperature range.

•

Bluetooth™ Headsets

DECT Headsets

Digital Still Cameras

MP3, Portable Music, and Portable Media

Players

•

Personal Data Assistants (PDAs)

Wrist Watches

Other Lithium-Ion/Polymer Battery-Powered

Devices

Typical Application

Adapter/USB Input

ADP

BATT+

BAT

AAT3681

BATT-

Battery

Pack

STAT

Enable

ISET

GND

R_SET

3681.2006.05.1.1

12 3 4 5 6 7...15

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