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431BIM PDF预览

431BIM

更新时间: 2022-11-25 21:05:52
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
12页 383K
描述
Adjustable Precision Zener Shunt Regulator

431BIM 数据手册

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March 2002  
LM431  
Adjustable Precision Zener Shunt Regulator  
General Description  
Features  
n Average temperature coefficient 50 ppm/˚C  
The LM431 is a 3-terminal adjustable shunt regulator with  
guaranteed temperature stability over the entire temperature  
range of operation. It is now available in a chip sized pack-  
age (4-Bump micro SMD) using National’s micro SMD pack-  
age technology. The output voltage may be set at any level  
greater than 2.5V (VREF) up to 36V merely by selecting two  
external resistors that act as a voltage divided network. Due  
to the sharp turn-on characteristics this device is an excel-  
lent replacement for many zener diode applications.  
n Temperature compensated for operation over the full  
temperature range  
n Programmable output voltage  
n Fast turn-on response  
n Low output noise  
n LM431 in micro SMD package  
n See AN-1112 for micro SMD considerations  
Connection Diagrams  
TO-92: Plastic Package  
SOT-23: 3-Lead Small Outline  
DS010055-28  
DS010055-1  
Top View  
Top View  
4-Bump micro SMD  
SO-8: 8-Pin Surface Mount  
DS010055-54  
DS010055-2  
Top View  
(bump side down)  
Top view  
*
Note: NC = Not internally connected. Must be electrically isolated from the  
rest of the circuit for the microSMD package.  
© 2002 National Semiconductor Corporation  
DS010055  
www.national.com  

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