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UB2017G-AA-AG6-R Datasheet(PDF) 2 Page - Unisonic Technologies |
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UB2017G-AA-AG6-R Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 13 page UB2017 Preliminary CMOS IC UNISONICTECHNOLOGIESCO.,LTD 2 of 13 www.unisonic.com.tw QW-R502-868.a MARKING INFORMATION PACKAGE VOLTAGE CODE (Note) MARKING SOT-25 AA: 4.2V PIN CONFIGURATION PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 CHRG Open-Drain Charge Status Output. When the battery is charging, the CHRG pin is pulled low by an internal N-channel MOSFET. When the charge cycle is completed, a weak pull-down of approximately 20uA is connected to the CHRG pin, indicating an “AC present” condition. 2 GND Ground. 3 BAT Charge Current Output. Provides charge current to the battery and regulates the final float voltage to 4.2V. 4 VCC Positive Input Supply Voltage. Provides power to the charger. VCC can range from 4.25V to 6.5V and should be bypassed with at least a 1μF capacitor. 5 CHRGT Open-Drain Charge Termination Status Output. When the battery is charging, the CHRGT pin is pulled high by an external component such as an LED. After the charging is completed, this pin is pulled low by internal N-channel MOSFET and it can be used as a charging termination indicator. 6 PROG Charge Current Program, Charge Current Monitor and Shutdown Pin. |
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