UCC2977

Supply voltage VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .. .. .. .. .. ..  . . . . . . . 15 V
Input voltage OPEN/SD, OSC, COMP, FB, VDD, OUTP . .  . GND0.5 V to V_DD+0.5 V
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . .  . . 65°C to 150°C
Junction temperature range, TJ . . . . . . . . . . . . . . . . . . . . . . .. . . 40°C to 125°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . 300°C

† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
§ All voltages are respect to GND.

Liquid crystal display (LCD) enclosures and cold cathode fluorescent lamps (CCFLs) used in notebook computer and portable electronics displays are becoming increasingly narrow, generating the need for a low profile CCFL power supply. Recent advances in single- and multi-layered piezoelectric ceramic transformers (PZT) have enabled the development of a new generation of efficient, size-reduced backlight converters. The UCC3975/6/7 family of 8-pin PZT controllers integrate the necessary circuitry for operating a PZT-based backlight supply using a flyback, half-bridge, or push-pull topology. The choice of power topology depends on application requirements such as input voltage, lamp voltage, and PZT gain.