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UC2871DWG4 PDF预览

UC2871DWG4

更新时间: 2024-11-01 12:02:03
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
14页 1014K
描述
Resonant Fluorescent Lamp Driver

UC2871DWG4 数据手册

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UC1871  
UC2871  
UC3871  
Resonant Fluorescent Lamp Driver  
FEATURES  
DESCRIPTION  
1µA ICC when Disabled  
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 re-  
quiring 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.  
PWM Control for LCD Supply  
Zero Voltage Switched (ZVS) on  
Push-Pull Drivers  
Open Lamp Detect Circuitry  
4.5V to 20V Operation  
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.  
Non-saturating Transformer  
Topology  
The Buck controller is optimized for smooth duty cycle control to 100%, while  
the flyback control ensures a maximum duty cycle of 95%.  
Smooth 100% Duty Cycle on  
Buck PWM and 0% to 95% on  
Flyback PWM  
Other features include a precision 1% reference, under voltage lockout, flyback  
current limit, and accurate minimum and maximum frequency control.  
BLOCK DIAGRAM  
UDG-92061-1  
Note: Pin numbers refer to DIL-18 and SOIC-18 packages only.  
10/94  

UC2871DWG4 替代型号

型号 品牌 替代类型 描述 数据表
UC2871DW TI

完全替代

Resonant Fluorescent Lamp Driver
UC3871DWTR TI

类似代替

Resonant Fluorescent Lamp Driver
UC3871DW TI

类似代替

Resonant Fluorescent Lamp Driver

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