Datasheet > AAT3690

AAT3690

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
20页	434K
描述
1.0A USB Port/Adapter Lithium-Ion/Polymer Battery Charger

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AAT3690 数据手册

AAT3690

1.0A USB Port/Adapter

Lithium-Ion/Polymer Battery Charger

™

BatteryManager

General Description

Features

•

USB/AC Adapter System Power Charger

— USB: Programmable up to 1.0A

— Adapter: Programmable up to 1.0A

4.0V to 5.5V Input Voltage Range

Adapter Presence Automatically Disables

USB Charging

The AAT3690 BatteryManager is a highly integrat-

ed single-cell lithium-ion/polymer battery charger

IC designed to operate with USB port and AC

adapter inputs. It requires the minimum number of

external components.

•

The AAT3690 precisely regulates battery charge

voltage and current for 4.2V lithium-ion/polymer

battery cells. Adapter charge current rates can be

programmed up to 1.0A. In the absence of an

adapter and with a USB port connected, the bat-

tery can also be charged by USB power. The USB

charge current can be programmed up to 1A. A

Charge Reduction Loop is also built in to allow

users to charge the battery with the available cur-

rent from a USB port, while keeping the port volt-

age regulated. USB charging is disabled when an

adapter is present.

•

High Level of Integration With Internal:

— Charging Devices

— Reverse Blocking Diodes

— Current Sensing

•

Automatic Recharge Sequencing

Digital Thermal Regulation in ADP Charge

Charge Reduction Loop in USB Charge

Battery Temperature Monitoring

Full Battery Charge Auto Turn-Off

Over-Current Protection

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

monitored for fault conditions. In the event of an

over-voltage or over-temperature condition, 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.

Applications

•

Cellular Telephones

Digital Still Cameras

Hand-Held PCs

The AAT3690 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.

MP3 Players

Personal Data Assistants (PDAs)

Other Lithium-Ion/Polymer Battery-Powered

Devices

Typical Application

Enable

BATT+

USB

USB Input

BAT

USBSET

10μF

R_SETUSB

BATT-

AAT3690

C_T

ADP

ADP Input

GND

ADPSET

STAT1

TEMP

R_SETADP

STAT2

Battery Pack

3690.2007.01.1.2

12 3 4 5 6 7...20

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