SGM3138
SGM3138 is 6-Channel Charge Pump White LED Driver manufactured by SG Micro.
SGM3138 6-Channel Charge Pump White LED Driver with Low Dropout Current Source
GENERAL DESCRIPTION
The SGM3138 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. 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.
The SGM3138 supports up to 6 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part...
