1A Linear Li-Ion Battery Charger for Single and Dual Cell Applications

Manufacturer's part number :


Manufacturer Skyworks


Description :

The AAT3663 BatteryManager™ is a member of AnalogicTech's Total Power Management IC™ family. This device is an integrated single/dual cell Lithium-Ion (Li-Ion) / polymer battery charger IC designed to operate from USB ports or an AC adapter inputs up to an input voltage of 13.2V. AAT3663 precisely regulates battery charge voltage and current for 4.2V and 8.4V Li-Ion battery cells. The battery charging current is user programmed up to 1A by an external resistor. Battery charge state is continuously monitored for fault conditions. A Digital Thermal Loop Control maintains the maximum possible battery charging current for the optimum set of input to output power dissipation and ambient temperature conditions. In the event of an over-current, over-voltage, short-circuit, or over-temperature fault condition, the device will automatically shut down, thus protecting the charger and the battery under charge. Two status monitor output pins are provided to indicate the battery charge status by directly driving external LEDs. Additionally, an open-drain power source detection output (ADPP#) is provided to report presence of an input power supply. The AAT3663 is available in a thermally enhanced, space-saving, 14-pin 3x3 mm TDFN package and is specified for operation over the -40°C to +85°C temperature range.

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    • 4.0V ~ 13.2V Input Voltage Range
    • Compatible with USB or AC Adapter Sources
    • Programmable Fast Charge Current from 100mA to 1A
    • Programmable Charge Termination Current
    • Digital Thermal Loop Charge Reduction
    • Less Than 0.4µA Battery Leakage Current
    • Programming Charge Timer
    • Battery Temperature Sensing
    • Battery Temp Sense Open Circuit Detection
    • Automatic Recharge Sequencing
    • Automatic Trickle Charge for Battery Pre-Conditioning
    • Automatic Charge Termination Shutdown/Sleep Mode
    • Less than 1µA Shutdown Current
    • Over-Voltage and Over-Current Protection
    • Power On Reset and Soft Start
    • 3 × 3mm 14-pin TDFN Package

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Linear Mode Yes  
Number of Cells 2  
Int/Ext FET Int  
Vcc Range (V) 4 to 13.2  
Voltage Regulation Accuracy (%) 0.5  
Temperature Monitor Yes  
Charge Safety Timers Yes  
Max Thermal Regulation Yes  
Operating Temperature (°C) -40 to +85  
Package TDFN33-14  
Cell Voltage (V) 8.4  
Max. Charging Current (mA) 1000