AAT8641

Advanced Analog Technology, Inc. AAT8641 Series Product information presented is current as of publication date. Details are subject to change without notice ONE-CELL LI-ION BATTERY PROTECTION IC FEATURES z z z Ideal for One-Cell Rechargeable Li-Ion Battery Packs GENERAL DESCRIPTION z z z The AAT8641 series are designed for the protection of one-cell rechargeable Li-Ion battery High Accuracy Voltage Detection pack against over charge, over discharge, over Low Current Consumption: current and short circuit. They use CMOS 3μA Supply Current (Typical) process to provide high accuracy voltage 0.1μA Shutdown Current detection while consuming relatively low amount of current. 3-Level Over Current Detection: Over-Current Level 1 /Over Current Level 2 Each of the AAT8641 devices incorporates / Short Circuit voltage comparators, bandgap reference voltage Wide Operating Temperature Range: generator, signal delay circuit, short circuit o o − 40 C to +85 C detector, and digital control circuit. www.DataSheet4U.com During the charge process, when the battery Small SOT25 Package voltage is charged to a value higher than VC1 (Over Charge Threshold Voltage), the output of C out pin switches to low level, i.e., the VN pin level. The output of Cout pin will switch to high level when the battery voltage is at a level lower than VC 2 (Over Charge Release Voltage), or when the charger is disconnected from the battery pack and the battery voltage level is in between VC1 and VC 2 . During the ...