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AAT3686

AAT
Part Number AAT3686
Manufacturer AAT
Description USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger
Published Apr 30, 2007
Detailed Description USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger General Description Features AAT3686 BatteryManager™ The AAT3...
Datasheet PDF File AAT3686 PDF File

AAT3686
AAT3686


Overview
USB Port/AC Adapter Lithium-Ion/Polymer Battery Charger General Description Features AAT3686 BatteryManager™ The AAT3686 BatteryManager is a highly integrated • USB Port/AC Adapter System Power Charger single-cell lithium-ion/polymer battery charger IC — USB: Programmable to 500mA for designed to operate with USB port and AC adapter USB Hi/Lo inputs.
It requires the minimum number of external — Adapter: Programmable to 1.
5A Max components.
• 4.
0V to 5.
5V Input Voltage Range • Adapter Present Indicator (ADPP# Pin) The AAT3686 precisely regulates battery charge • Adapter Presence Automatically Disables voltage and current for 4.
2V lithium-ion/polymer USB Charging battery cells.
Adapter charge current rates can be • High Level of Integration With Internal: programmed up to 1.
5A.
In the absence of an — Charging Devices adapter and with a USB port connected, the battery — Reverse Blocking Diodes can also be charged by USB power.
Depending on — Current Sensing the USB port type, the AAT3686 charge current can • Automatic Recharge Sequencing be programmed for two separate levels up to • Digital Thermal Regulation in ADP Charge 500mA.
An optional Charge Reduction Loop is also • Charge Reduction Loop in USB Charge built in to allow users to charge the battery with • Battery Temperature Monitoring available current from a USB port, while keeping • Full Battery Charge Auto Turn-Off the port voltage regulated.
USB charging is dis• Over-Voltage and Emergency Thermal abled when an adapter is present.
Protection Battery temperature and charge state are fully moni• Power On Reset and Soft Start tored for fault conditions.
In the event of an over-volt• Serial Interface Status Reporting age or over-temperature failure, the device will auto• TDFN34-16 or TDFN44-16 Package matically shut down, thus protecting the charging www.
DataSheet4U.
com device, control system, and the battery under charge.
Status monitor output pins are provided to indicate the battery charge status by directly...



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