UC3872DWG4 Datasheet PDF - TI

●DESCRIPTION

●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