參數(shù)資料
型號: LM431BIZ/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.495 V, PBCY3
封裝: PLASTIC, TO-92, 3 PIN
文件頁數(shù): 1/13頁
文件大?。?/td> 872K
代理商: LM431BIZ/NOPB
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
01005501
Top View
SO-8: 8-Pin Surface Mount
01005502
Top view
SOT-23: 3-Lead Small Outline
01005528
Top View
4-Bump micro SMD
01005554
Top View
(bump side down)
Note: *NC = Not internally connected. Must be electrically isolated from the rest of the circuit for the microSMD package.
March 2005
LM431
Adjustable
Precision
Zener
Shunt
Regulator
2005 National Semiconductor Corporation
DS010055
www.national.com
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