UB2016

Preliminary

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 13

www.unisonic.com.tw

QW-R502-869.a

MARKING INFORMATION

PACKAGE

VOLTAGE CODE

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

4.25V to 6.5V and should be bypassed with at least a 1μF capacitor.

5

PROG

Charge Current Program, Charge Current Monitor and Shutdown Pin.