SC623A Datasheet PDF | Semtech Corporation

Semtech Corporation SC623A

The SC623A is a high efficiency charge pump LED driver using Semtech’s proprietary mAhXLifeTM technology. The charge pump provides backlight current in conjunction with four matched current sinks. It also can supply continuous or bursted current to a flash LED using the dedicated flash driver current sink.

Part No.	SC623A
Datasheet	SC623A Download
Manufacturer	Semtech Corporation
Description	LED Light Management Unit Charge Pump
Buy	Stock & Price

FEATURES

Charge Pump, 4 LEDs, 400mA Flash LED, and I2C Interface

DESCRIPTION

Performance is optimized for use in single-cell Li-ion battery applications. The load and supply conditions determine whether the charge pump operates in 1x, 1.5x, or 2x mode. An optional fading feature that gradually adjusts the backlight current is provided to simplify control software. A flash-timeout feature disables the flash if active for longer than 1 second. The SC623A uses an I2C compatible serial interface. The interface controls all functions of the device, including backlight and flash currents. The flash/spotlight output is triggered via either the I2C interface or a dedicated pin. In sleep mode, the device reduces quiescent current to 100μA while continuing to monitor the serial interface. Total current reduces to 0.1μA in shutdown. Input supply voltage range — 3.0V to 5.5V Charge pump modes — 1x, 1.5x and 2x Four programmable current sinks with 32 steps from 0.5mA t...