The FAN7547A provides all control functions for a current-fed, push-pull, self-oscillation type converter and also contains a pulse-width-modulated (PWM) controller to develop a supply voltage. Typical operating frequency range is from 30kHz to 100kHz, depending on the cold cathode fluorescent lamp (CCFL) and the transformer's characteristics.

• Backlight Lamp Ballast and Soft Dimming
• Reduce Number Components
• Wide Range Operating Voltage (6 to 30V)
• Precision Voltage Reference Trimmed to 3.4%
• Low Standby Current (Typically 50µA)
• Soft-Start Function
• PWM Control
• Analog, Mixed, and PWM Dimming Function
• P-Channel MOSFET Drive
• Open-Lamp Protections (OLP)
• Shutdown Protections (SDP)
• 14-Pin SOP