SC908MLTRT中文資料SEMTECH數(shù)據(jù)手冊(cè)PDF規(guī)格書

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