Semtech Announces The SC654, SC657 and SC658 LED Backlight Charge Pump Drivers for 6, 5, and 4 LEDs

By pur, Monday, October 26th, 2009
Category: Light, Optics, Semiconductor

The SC654, SC657 and SC658 are LED backlight charge pump drivers for 6, 5, and 4 LEDs, respectively. Optimized for single-cell Li-ion battery applications, each part in this new platform is packaged in ultra-thin (0.6mm max.) 14-pin 2×2mm MLPQ package to provide the industry’s smallest solution in reliable and easy-to-handle plastic packaging. Each member of the SC65x platform integrates a high-efficiency charge pump, multiple low-dropout current sink regulators, and the proprietary one-wire SemPulse® interface. The mAhXLife™ charge pump monitors each LED’s forward voltage and automatically selects between 1x, 1.5x and 2x modes to optimize efficiency as the battery voltage changes over time. The low-dropout current sink regulators provide LED current matching of 0.5% typical to ensure accurate and even illumination. LED current may be adjusted from 0mA to 25mA in 29 settings via the one-wire SemPulse® interface…

Tiny Charge Pump
Tiny Charge Pump


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backlight charge pump, charge pump drivers