Backlight Driver For 5 LEDs With SemPulseTM Interface

The SC657 is a high efciency Charge Pump LED Driver using Semtech’s proprietary Charge Pump technology. Performance is optimized for use in single-cell Li-ion battery applications. The Charge Pump provides backlight current utilizing fve matched current sinks. The load and supply conditions determine whether the Charge Pump operates in x, .5x, or 2x mode. An optional fading feature that gradually adjusts the backlight current is provided to simplify control software. The SC657 uses the proprietary SemPulseTM single wire Interface to control all functions of the device, including backlight currents. The single wire Interface minimizes Microcontroller and Interface pin counts. The fve LEDs CAN be grouped in up to three separate banks that CAN be independently controlled. The SC657 enters sleep mode when all the LED Drivers are disabled. In this mode, the quiescent current is reduced while the device continues to monitor the SemPulse Interface By Semtech Corporation
SC657 's PackagesSC657 's pdf datasheet

SC657 Pinout, Pinouts
SC657 pinout,Pin out
This is one package pinout of SC657,If you need more pinouts please download SC657's pdf datasheet.

SC657 Application circuits
SC657 circuits
This is one application circuit of SC657,If you need more circuits,please download SC657's pdf datasheet.

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