UC3872NG4

谐振灯镇流器控制器 Resonant Lamp Ballast Controller

DESCRIPON

The UC3872 is a resonant lamp ballast controller optimized for driving cold cathode fluorescent, neon, and other gas discharge lamps. The res onant power stage develops a sinusoidal lamp drive voltage, and mini mizes switching loss and EMI generation. Lamp intensity adjustment is accomplished with a buck regulator, which is synchronized to the external power stage’s resonant frequency. Suitable for automotive and battery powered applications, the UC3872 draws only 1µA when disabled.

FEATURES

• Controls Different Types of Lamps:

  Cold Cathode Fluorescent, Neon, and Gas Discharge

• Zero Voltage Switching ZVS of Push-Pull Drivers

• Accurate Control of Lamp Current

• Variable Lamp Intensity Control

• 1µA Disable Current

• 4.5V to 24V Operation

• Open Lamp Detection Circuitry