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AAT8661C Datasheet(PDF) 1 Page - Advanced Analog Technology, Inc. |
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AAT8661C Datasheet(HTML) 1 Page - Advanced Analog Technology, Inc. |
1 / 25 page Advanced Analog Technology, Inc. – 台灣類比科技股份有限公司 – – Advanced Analog Technology, Inc. – Page 1 of 25 V2.0 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 Ideal for One-Cell Rechargeable Li-Ion Battery Packs High Accuracy Voltage Detection Low Current Consumption: A 3 μ Supply Current (Typical) A 1 . 0 μ Shutdown Current 3-Level Over Current Detection: Over-Current Level 1 /Over Current Level 2 / Short Circuit Wide Operating Temperature Range: C 85 to C 40 ο ο − Small SOT26 Package PIN CONFIGURATION NULL out D VN out C GND DD V GENERAL DESCRIPTION The AAT8661 series are designed to protect one-cell rechargeable Li-Ion battery pack against over-charge, over-discharge, over-current and short circuit. They use CMOS process to provide high accuracy voltage detection and low current consumption. Each of the AAT8661 devices incorporates voltage comparators, bandgap reference voltage generator, signal delay circuit, short circuit detector, and digital control circuit. In the charge process, when the battery voltage is charged to a value greater than 1 C V (Over-Charge Threshold Voltage), the output of out C pin switches to the low level, i.e., the VN pin level. The output of out C pin will switch to high level 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 1 D V (Over-Discharge Threshold Voltage), the output of out D pin switches to low level immediately after the internal delay time elapses. The output of out D pin will switch to high level when the battery voltage is at a level higher than 2 D V (Over-Discharge Release Voltage). Over current level 1 voltage ( 1 OC V ) is used to |
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