Shengbang Microelectronics SGM3146
The SGM3146 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.| Part No. | SGM3146 |
|---|---|
| Datasheet | SGM3146 Download |
| Manufacturer |  Shengbang Microelectronics |
| Description | 8-Channel Charge Pump White LED Driver |
| Buy | Stock & Price |
GENERAL DESCRIPTION
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 SGM3146 supports up to 8 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part implements a 4-bit DAC for brightness control. Users can easily configure the LED current from 1.65mA to 27mA by a serial pulse. The dimming of white LEDs current can be achieved by applying a pulse signal to the EN/SET pin. There are totally 16 steps of current could be set by users. The operating voltage range is 2.7V to 5.5V. Internal soft-start circuitry effectively reduces the in-rush current while both start-up and mode transition. The SGM3146 is available in Green TQFN-3×3-20L package and is rated over the -40℃ to +85℃ temperature range.FEATURES
● Input Voltage Range: 2.7V to 5.5V● Drives up to 8 LEDs at 27mA Each...
