The MAX17127 is a high-efficiency driver for white lightemitting diodes (LEDs). It is designed for large liquidcrystal displays (LCDs) that employ an array of LEDs as the light source. An internal switch current-mode step-up converter drives the LED array, which can be configured for up to six strings in parallel and 13 LEDs per string. Each string is terminated with ballast that achieves Q2% current-regulation accuracy, ensuring even LED brightness. The MAX17127 has a wide input voltage range from 5V to 26V, and provides adjustable 10mA to 30mA full-scale LED current.