SGM3133
SGM3133 is 4-Channel Charge Pump White LED Driver manufactured by SG Micro.
SGM3133 4-Channel Charge Pump White LED Driver with Low Dropout Current Source
GENERAL DESCRIPTION
The SGM3133 is a high efficiency and cost effective charge pump white LED driver. It supports up to 4 white LEDs and regulates a constant current for uniform intensity. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources. The small equivalent 1× mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of 1× mode and optimize the efficiency of Li-ion battery in white LED applications.
User can easily configure each LED current from 1.25mA to 20mA by a pulse dimming control. The dimming...
