UC3872中文资料谐振式日光灯镇流控制器数据手册TI规格书

描述 Description

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.

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

简介

UC3872属于集成电路（IC）的照明镇流器控制器。由TI制造生产的UC3872照明，镇流器控制器此产品族中的产品可用于实现控制和调节功能。对于日光灯、电致发光灯和 HID 灯等非 LED 照明工具的正常工作，这些功能很有必要或十分有用。既定器件所具备的特定功能集因预期用途各异，并且所供应的产品可能包括相应资源以直接控制驱动负载的电源，也可能不包括这些资源。