STw4102
Dual USB/wall adapter Li-ion battery charger with gas gauge
Features
■ Constant current www.
DataSheet4U.
com linear charger ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
constant
voltage (CCCV) QFN 24 (Plastic micropackage) Pin connections (top view)
PWRDETECTN TEST EOCHG BATTSENSE BATT SENSE
24 23 22 21 20 19
Common or separate USB/wall adapter inputs Fast charge current control up to 1 A for wall adapter and up to 500 mA for USB Support for currents higher than 1 A using external components Programmable charge
voltage (4.
1 V, 4.
2 V, 4.
3 V, 4.
35 V) with 1% accuracy Thermal regulation Trickle charge mode at low battery
voltage Wall adapter
voltage up to 16 V Battery over
voltage protection at 4.
7 V ...