LX6503

LX6503 www.DataSheet4U.com TM ® HIGH PERFORMANCE CCFL CONTROLLER P RODUCTION D ATASHEET KEY FEATURES Push-Pull Output to Provide Low Cost Solution for Multiple Topology Configuration 0.6A Peak Source and Sink Drive Current 6V to 27V Power Rail operation (36V Absolute Maximum) On Chip Regulator with Under Voltage Lock Out Protection Inverter Operating Frequency Synchronization Soft Start Control Programmable Strike Time, Fault Time, Strike Frequency, and Burst Dimming Frequency Comprehensive Brightness Control Modes Provide Optimized Solution for Off PFC Inverter Applications APPLICATIONS ƒ LCD-TV ƒ Multi-Lamp LCD Monitors ƒ CCFL, EEFL, FFL Backlight Systems DESCRIPTION The LX6503 is a high performance CCFL controller optimized for LCD-TV and other multi-lamp LCD display systems. It particularly provides a cost competitive solution for off-PFC inverter applications. The controller provides a pair of pushpull PWM drive signals with adequate capacity to drive a push-pull, half bridge, or full bridge CCFL inverter configuration with the addition of simple external circuitry. An on-chip regulator supplies both the operating voltage for the output gate drive and bias to the internal control circuitry. This allows a direct connection of the controller to the system supply extending the voltage up to 27V without external regulators. In addition the controller includes a synchronization capability that allows the user to synchronize both the frequency and phase of...