UC2871中文资料谐振荧光灯驱动器数据手册TI规格书

描述 Description

The UC1871 Family of IC’s is optimized for highly efficient fluorescent lamp control. An additional PWM controller is integrated on the IC for applications requiring an additional supply, as in LCD displays. When disabled the IC draws only 1µA, providing a true disconnect feature, which is optimum for battery powered systems. The switching frequency of all outputs are synchronized to the resonant frequency of the external passive network, which provides Zero Voltage Switching on the Push-Pull drivers.
Soft-Start and open lamp detect circuitry have been incorporated to minimize component stress. An open lamp is detected on the completion of a soft-start cycle.
The Buck controller is optimized for smooth duty cycle control to 100%, while the flyback control ensures a maximum duty cycle of 95%.
Other features include a precision 1% reference, under voltage lockout, flyback current limit, and accurate minimum and maximum frequency control.

特性 Features

·1µA ICC when Disabled ·PWM Control for LCD Supply ·Zero Voltage Switched (ZVS) on Push-Pull Drivers ·Open Lamp Detect Circuitry ·4.5V to 20V Operation ·Non-saturating Transformer Topology ·Smooth 100% Duty Cycle on Buck PWM and 0% to 95% on Flyback PWM

简介

UC2871属于集成电路（IC）的照明镇流器控制器。由TI制造生产的UC2871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。