4-Channel Integrated LCD Supply

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 has 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-pin QFN package, the ISL97651 is specified for ambient operation over the -40oC to +105oC temperature range.
By Intersil Corporation