Description
FAN7313 provides all the control functions for 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 cold cathode fluorescent lamp (CCFL) and the transformer’s characteristics.

FEATUREs
„High-Efficiency Single-Stage Power Conversion
„Wide Input Voltage Range: 4.5V to 25.5V
„Backlight Lamp Ballast and Soft Dimming
„Reduces Required External Components
„Precision Voltage Reference Trimmed to 2%
„Push-Pull Topology
„Soft-Start Capability
„PWM Control at Fixed Frequency
„Analog and Burst Dimming Functions
„Open-Lamp Protection
„Open-Lamp Regulation
„Over-Voltage Protection
„Short-Circuit Protection
„20-Pin SOIC

Applications
„LCD TV
„LCD Monitor