AAT8661 Datasheet | AAT

Advanced Analog Technology, Inc. AAT8661 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 AAT8661 series are designed to protect one-cell rechargeable Li-Ion battery pack against High Accuracy Voltage Detection over-charge, over-discharge, over-current and Low Current Consumption: short circuit. They use CMOS process to provide 3μA Supply Current (Typical) high accuracy voltage detection and low current consumption. 0.1μA Shutdown Current Each of the AAT8661 devices incorporates 3-Level Over Current Detection: voltage parators, bandgap reference voltage Over-Current Level 1 /Over Current Level 2 / Short Circuit generator, signal delay circuit, short circuit detector, and digital control circuit. Wide Operating Temperature Range: ο ο - 40 C to 85 C In the charge process, when the battery voltage is .. charged to a value greater than VC1 (Over-Charge Small SOT26 Package Threshold Voltage), the output of C out pin switches to the low level, i.e., the VN pin level. The output of C out pin will switch to high level PIN CONFIGURATION D out V DD NULL when the battery voltage falls lower than VC2 (Over-Charge Release Voltage), or when the charger is disconnected from the battery pack and the battery voltage level ranges between VC1 and VC2. During the discharge process, when the battery voltage drops to a value lower than VD1 (Over-Discharge Threshold Voltage), the output of D out pin switches to low level immediately after the internal delay time elapses. The output of D out pin will switch to high level when the battery voltage is at a level higher than VD 2 (Over-Discharge Release Voltage). Over current level 1 voltage ( VOC1 ) is used to C out - - 台灣類比科技股份有限公司 - Advanced Analog Technology, Inc. - Page 1 of 25 V2.0 Advanced...