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AAT3686-3

更新时间： 2024-11-30 04:30:31
品牌 Logo 应用领域
ANALOGICTECH 电池
页数 文件大小 规格书
23页 455K
描述
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger

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中文翻译

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AAT3686-3 数据手册

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PRODUCT DATASHEET  
AAT3686  
BatteryManagerTM  
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger  
General Description  
Features  
The AAT3686 BatteryManager is a highly integrated sin-  
gle-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.  
• USB Port/AC Adapter System Power Charger  
USB: Programmable to 500mA for USB Hi/Lo  
Adapter: Programmable to 1.5A Max  
▪
▪
• 4.0V to 5.5V Input Voltage Range  
• Adapter Present Indicator (ADPP# Pin)  
The AAT3686 precisely regulates battery charge voltage  
and current for 4.2V lithium-ion/polymer battery cells.  
Adapter charge current rates can be programmed up to  
1.5A. In the absence of an adapter and with a USB port  
connected, the battery can also be charged by USB power.  
Depending on the USB port type, the AAT3686 charge  
current can be programmed for two separate levels up to  
500mA. An optional Charge Reduction Loop is also built in  
to allow users to charge the battery with available current  
from a USB port, while keeping the port voltage regulat-  
ed. USB charging is disabled when an adapter is present.  
•
Adapter Presence Automatically Disables USB Charging  
• 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-Voltage and Emergency Thermal Protection  
• Power On Reset and Soft Start  
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 22 various  
status states to a microcontroller.  
• Serial Interface Status Reporting  
• TDFN34-16 or TDFN44-16 Package  
Applications  
• Cellular Telephones  
• Digital Still Cameras  
• Hand-Held PCs  
• MP3 Players  
• Personal Data Assistants (PDAs)  
• Other Lithium-Ion/Polymer Battery-Powered Devices  
The AAT3686 is available in a Pb-free, thermally-  
enhanced, space-saving TDFN34-16 (3x4mm) or  
TDFN44-16 (4x4mm) 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  
C2  
10µF  
RSETH  
USBL  
TS  
CT  
AAT3686  
RSETL  
BATT-  
CT  
GND  
ADP Present  
ADP Input  
ADPP#  
ADP  
ADPSET  
DATA  
TEMP  
RSET  
STAT1  
STAT2  
Battery Pack  
Serial Data  
w w w . a n a l o g i c t e c h . c o m  
3686.2007.12.1.11  
1
1234567...23

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