General Description
The AAT3670 BatteryManager is a highly integrated single-cell lithium-ion/polymer (Li-ion) battery charger and system power management IC that enables simultaneous battery charging and full system usage without compromising the battery’s charge cycle life. It operates with low-voltage AC adapter (ADP) and USB inputs and requires a minimum number of external components.

Features
• ADP, USB, or Battery Powers System Load Through Internal Current-Limited Switches
• Simultaneous Battery Charging and System Usage
• Voltage Sensed Charge Reduction Loop to Minimize Charge Time, Even While the System Operates
• Digitized Thermal Loop
• Battery Power Enable (ENBAT)
• Battery Charge Timer (CT)
• Battery Temperature Monitoring (TS)
• Battery Charge Status Report (STATx)
• Automatic Recharge Sequencing
• Battery Under-Voltage, Over-Voltage, and OverCurrent Protection
• System Load Current Limiting
• Thermal Protection
• 24-pin 4x4mm QFN Package

Applications
• Cellular Telephones
• Digital Still Cameras
• Personal Data Assistants (PDAs)
• Hand Held PCs
• MP3 Players and PMP
• Other Li-ion Battery Powered Devices