UNISONIC TECHNOLOGIES CO.
, LTD UB6054A
Preliminary
CMOS IC
ONE-CELL STANDALONE LINEAR LITHIUM BATTERY CHARGER
DESCRIPTION
6 5 4
UTC UB6054A is a complete, constant current and constant
voltage linear charger for single cell lithium-ion batteries.
Its small size and ability to regulate low charge currents make UTC UB6054A especially well-suited for portable applications using low capacity rechargeable lithium-ion coin cells.
Furthermore, UTC UB6054A is specifically designed to work within USB power specifications.
No external sense resistor is needed, and no blocking diode is required due to the internal
MOSFET architecture.
The charge
voltage is fixed at 4.
2V, and the charge current can ...