General Description
The AAT3683 BatteryManager is a highly integrated single-cell lithium-ion / polymer (Li-Ion) battery charger that operates from a USB port or an AC adapter input up to an input voltage of 6.5V.
The AAT3683 precisely regulates battery charge voltage and current for 4.2V Li-Ion battery cells. The battery charging current can be set by an external resistor up to 1A.

FEATUREs
• USB or AC Adapter Input
• Programmable from 100mA to 1A
• 4.0V to 6.5V Input Voltage Range
• High Level of Integration with Internal:
    — Charging Device
    — Reverse Blocking Diode
    — Current Sensing
• Digital Thermal Regulation
• Charge Current Programming (ISET)
• Charge Termination Current Programming (TERM)
• Charge Timer (CT)
• Battery Temperature Sensing (TS)
• TS Pin Open Detection
• Automatic Recharge Sequencing
• Automatic Trickle Charge for Battery PreConditioning (no trickle charge option available)
• Full Battery Charge Auto Turn-Off / Sleep Mode / Charge Termination
• 1µA Max. Shutdown Current
• Over-Voltage and Over-Current Protection
• Emergency Thermal Protection
• Power On Reset and Soft Start
• 2.2x2.2mm STDFN-10 (AAT3863-2 and -3) and QFN33-16 (AAT3683-4) Packages

APPLICATIONs
• BluetoothHeadsets, Headphones, Accessories
• Cellular Phones
• Digital Still Cameras
• MP3, Portable Music, and Portable Media Players
• Personal Data Assistants (PDAs) and Handheld Computers
• Other Li-Ion Battery-Powered Devices