UC3872 - 谐振灯镇流器控制器

UC3872是TI德州仪器公司的一款CCFL背光控制器产品，UC3872是谐振灯镇流器控制器，本站介绍了UC3872的封装应用图解、特点和优点、功能等，并给出了与UC3872相关的TI元器件型号供参考。

UC3872 - 谐振灯镇流器控制器 - CCFL背光控制器 - 电源管理特殊功能 - 德州仪器

产品描述

The UC3872 is a resonant lamp ballast controller optimized for driving cold cathode fluorescent, neon, and other gas discharge lamps. The resonant power stage develops a sinusoidal lamp drive voltage, and minimizes switching loss and EMI generation. Lamp intensity adjustment is accomplished with a buck regulator, which is synchronized to the external power stage\x92s resonant frequency. Suitable for automotive and battery powered applications, the UC3872 draws only 1\xB5A when disabled.

Soft start and open lamp detect circuitry have been incorporated to minimize component stresses. Open lamp detection is enabled at the completion of a soft start cycle. The chip is optimized for smooth duty cycle control to 100%.

Other features include a precision 1.2% reference, undervoltage lockout, and accurate minimum and maximum frequency control.

产品特性

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
1\xB5A Disable Current
4.5V to 24V Operation
Open Lamp Detection Circuitry

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