ISL97651
4-Channel Integrated LCD Supply
NROETCROEMCMOEMNMDEENIDSDLRE9ED8P6F0LO3ARCENMEWENDTEPSAIGRTNS
DATASHEET
FN749...
ISL97651
4-Channel Integrated LCD Supply
NROETCROEMCMOEMNMDEENIDSDLRE9ED8P6F0LO3ARCENMEWENDTEPSAIGRTNS
DATASHEET
FN7493 Rev 3.00 April 24, 2009
The ISL97651 represents a high power, integrated LCD supply IC targeted at large panel LCD displays. The ISL97651 integrates a high power, 4.4A boost converter for AVDD generation, an integrated VON charge pump, a VOFF charge pump driver, VON slicing circuitry and a buck
regulator with 2A switch for logic generation.
The ISL97651 have been designed for ease of layout and low BOM cost. Supply sequencing is integrated for both AVDD -> VOFF -> VON and AVDD/VOFF -> VON sequences. The TFT power sequence uses a separate enable to the logic buck
regulator for maximum flexibility.
Peak efficiencies are 90% for boost and 92% for buck while operating from a 4V to 5.5V input supply. The current mode buck offers superior line and load regulation. Available in the 36 Ld QFN package, the ISL97651 is specified for ambient operation over the -40°C to +105...