ISL97650 Datasheet | Renesas

4-Channel Integrated LCD Supply NOTNORERCEOCMOMMEMNEDNEDDEDFORREPNLEAWCDEEMSEINGTNS FN9198 Rev.4.00 April 17, 2009 4-Channel Integrated LCD Supply The ISL97650 represents a high power, integrated LCD supply IC targeted at large panel LCD displays. The ISL97650 integrates a high power, 2.6A 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 ISL97650 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 both the boost and buck while operating from a 4V to 14V input supply. The current mode buck offers superior line and load regulation. Available in the 36 Ld TQFN package, the ISL97650 is specified for ambient operation over the -40°C to +105°C temperature range. Pinout ISL97650 (36 LD TQFN) TOP VIEW 36 VDC2 35 EN 34 FBB 33 VIN 32 CM1 31 DELB 30 ENL 29 CDEL 28 VDC1 LX1 1 LX2 2 CB 3 LXL 4 NC 5 VSUP 6 FBL 7 CM2 8 CTL 9 THERMAL PAD 27 AGND1 26 PGND1 25 PGND2 24 VINL 23 NOUT 22 PGND3 21 FBN 20 VREF 19 FBP Features - 4V to 14V Input Supply - AVDD Boost Up to 20V, with Integrated 2.8A FET - Integrated VON Charge Pump, Up to 35VOUT - VOFF Charge Pump Driver, Down to -18V - VLOGIC Buck Down to 1.2V, with Integrated 2A FET - Automatic Start-up Sequencing - AVDD -> VOFF -> VON or AVDD/VOFF -> VON - Independent Logic Enable - VON Slicing - Thermally Enhanced 6x6 Thin QFN Package - Pb-free (Ro HS pliant) Applications - LCD Monitors (15”+) - LCD-TVs (up to 40”) - Notebook Displays (up to...