ISL97650 4-Channel Integrated LCD Supply
Description
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.
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 (RoHS compliant)
Applications
• LCD Monitors (15”+)
• LCD-TVs (up to 40”)
• Notebook Displays (up to 16”)
• Industrial/Medical LCD Displays
Комментарии