Tuesday, 28 September 2010
LED Driver with Dynamic Headroom Control
LM3492 LED driver with dynamic headroom control that accurately and efficiently drives current to two independently dimmable strings of LEDs. The LM3492, a member of National's PowerWise energy-efficient product family, maximizes system efficiency and reduces system complexity and cost in automotive LCD backlight applications. National's LM3492 integrates a boost converter and a two-channel current regulator to efficiently and cost-effectively drive two independently dimmable LED strings with a maximum power of 15W and an output voltage of up to 65V.