Datasheet > AAT3681-1

AAT3681-1

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	242K
描述
USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger

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AAT3681-1 数据手册

PRODUCT DATASHEET

AAT3681

BatteryManager^TM

USB Port or AC Adapter Lithium-Ion/Polymer Battery Charger

General Description

Features

The AAT3681 BatteryManager is an integrated single cell

lithium-ion/polymer battery charger IC, designed to oper-

ate from a DC power source or USB port up to an input

voltage of 7.5V. It requires just one external component.

• USB or AC Adapter System Power Charger

Programmable from 15mA to 300mA

• 4.0V ~ 7.5V 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/poly-

mer battery cells. When charged from an AC adapter or

USB port, the battery charging current can be set by an

external resistor up to 300mA.

Battery charge state is continuously monitored for fault

conditions. In the event of an over-voltage, short-cir-

cuit, or over-temperature failure, the device will auto-

matically shut down, thus protecting the charging device,

control system, and the battery under charge. A status

monitor output pin is provided to indicate the battery

charge status by directly driving an external LED.

• Shutdown Current <1μA

• Automatic Trickle Charge for Battery Pre-Conditioning

(AAT3681-1 is No Trickle Charge Option)

• Over-Voltage and Emergency Thermal Protection

• Power On Reset and Soft Start

• LED Status Pin

• 8-Pin 2.0x2.1mm SC70JW Package

The AAT3681 is available in a Pb-free, thermally

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

age and is specified for operation over the -40°C to

+85°C temperature range.

Applications

• 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

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

3681.2007.12.1.5

12 3 4 5 6 7...15

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