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LM431ACM3X 参数 Datasheet PDF下载

LM431ACM3X图片预览
型号: LM431ACM3X
PDF下载: 下载PDF文件 查看货源
内容描述: 可调式精密齐纳并联稳压器 [Adjustable Precision Zener Shunt Regulator]
分类和应用: 稳压器电源电路参考电压源光电二极管输出元件
文件页数/大小: 13 页 / 870 K
品牌: NSC [ NATIONAL SEMICONDUCTOR ]
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LM431 Adjustable Precision Zener Shunt Regulator
March 2005
LM431
Adjustable Precision Zener Shunt Regulator
General Description
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 (V
REF
) 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.
Features
n
Average temperature coefficient 50 ppm/˚C
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
01005528
01005501
Top View
4-Bump micro SMD
Top View
SO-8: 8-Pin Surface Mount
01005554
01005502
Top view
Top View
(bump side down)
Note:
*NC = Not internally connected. Must be electrically isolated from the rest of the circuit for the microSMD package.
© 2005 National Semiconductor Corporation
DS010055
www.national.com