SC908MLTRT 数据手册 ( 数据表 ) - Semtech Corporation

Description
The SC908 is a complete power management system designed for use in Bluetooth wireless headsets, portable media players, and other battery-powered electronics where size is critical. Included are a full featured standalone Li-Ion battery charger with a programmable low-battery monitor, a low noise LDO regulator, and a DC-DC buck converter.

FEATUREs
■ Single Cell Li-Ion battery charger — CC/CV charging with current soft start
■ Charger regulated output voltage — 4.2V ±1% over temperature with Kelvin sense of battery voltage
■ Charger input protection withstands 28V indefinitely
■ Charger max constant current setting — 500mA
■ Adjustable charge termination current down to 10mA
■ Battery NTC interface disables charging if battery temperature out of range
■ Programmable low battery detector threshold
■ Four status indicators
■ Programmable charge completion timer
■ Buck converter with enable — output programmable from 1V to 3V, 150mA max output
■ Buck converter efficiency — 88% at 50mA
■ General purpose low noise LDO regulator with fast enable, active shutdown
■ 4x4x0.9 (mm) MLPQ package
■ WEEE and RoHS compliant

APPLICATIONs
■ Bluetooth headsets
■ MP3 players
■ Low cost mobile phones