MAX17105 - Maxim

MAX17105 8-String WLED Driver

The MAX17105 is a high-efficiency driver for white-lightemitting diodes (WLEDs). 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 controller drives the LED array, which can be configured for up to 8 strings in parallel and 10 LEDs per string. Each string is termin.

Features

to protect the controller from fault conditions. Separate feedback loops limit the output voltage under any circumstance, ensuring safe operation. Once an open string is detected, the string is disabled while other strings operate normally. The MAX17105 also features short LED detection. The shorted strings are also disabled. The controller features cycle-by-cycle current limit to provide constant operation and soft-start capability. If the MAX17105 is in currentlimit condition, the step-up regulator is latched off after an internal timer expires. A thermal-shutdown circuit provides another le.