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LP4075 数据表(PDF) 2 Page - Lowpower Semiconductor inc |
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LP4075 数据表(HTML) 2 Page - Lowpower Semiconductor inc |
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2 / 7 page ![]() LP4075-00 Aug.-2019 Email: marketing@lowpowersemi.com www.lowpowersemi.com Page 2 of 7 Preliminary Datasheet LP4075 Functional Pin Description Package Type SOT23-5 Pin Configurations VIN GND STAT BAT ISET 1 2 3 4 5 Top View Pin Name Description SOT23-5 1 STAT Open-Drain Charge Status Output. When the battery is charging, the STAT pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, the pin is pulled High. 2 GND Ground. 3 BAT Charge Current Output. Provides charge current to the battery and regulates the final float voltage to 4.2V. 4 VIN Positive Input Supply Voltage. 5 ISET Charge Current Program and Charge Current Monitor Pin. The charge current is programmed by connecting a 1% resistor, RISET, to ground. When charging in constant-current mode, this pin servos to 1V. In all modes, the voltage on this pin can be used to measure the charge current using the following formula: IBAT=1000/RISET |
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