The FAN7311 provides all the control functions for use as a series parallel resonant converter as well as a pulse width modulation (PWM) controller to develop a supply voltage. Typical operating frequency range is between 30kHz and 250kHz, depending on the CCFL and the transformer's characteristics. The FAN7311 uses a new patented phase-shift control.

• High-Efficiency Single-Stage Power Conversion
• Wide Input Voltage Range: 5V to 25.5V
• Backlight Lamp Ballast and Soft Dimming
• Reduces Required External Components
• Precision Voltage Reference Trimmed to 2%
• ZVS Full-Bridge Topology
• Soft-Start Capability
• PWM Control at Fixed Frequency
• Analog and Burst Dimming Function
• Programmable Striking Frequency
• Open-Lamp Protection
• Open-Lamp Regulation
• 20-Pin SSOP/SOIC

• LCD TV
• LCD Monitor