LM431BIM3 National Semiconductor, LM431BIM3 Datasheet
LM431BIM3
Manufacturer Part Number
LM431BIM3
Description
IC REG ADJ ZENER SHUNT SOT23-3
Manufacturer
National Semiconductor
Specifications of LM431BIM3
Reference Type
Shunt, Adjustable
Voltage - Output
2.495 ~ 36 V
Tolerance
±1%
Temperature Coefficient
50ppm/°C
Number Of Channels
1
Current - Cathode
400µA
Current - Output
100mA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TO-236-3, SC-59, SOT-23-3
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Voltage - Input
-
Current - Quiescent
-
Other names
*LM431BIM3
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© 2002 National Semiconductor Corporation
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
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.
Connection Diagrams
SO-8: 8-Pin Surface Mount
TO-92: Plastic Package
REF
) up to 36V merely by selecting two
Top View
Top view
DS010055
DS010055-1
DS010055-2
Features
n Average temperature coefficient 50 ppm/˚C
n Temperature compensated for operation over the full
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
Note:
temperature range
*
rest of the circuit for the microSMD package.
NC = Not internally connected. Must be electrically isolated from the
SOT-23: 3-Lead Small Outline
4-Bump micro SMD
(bump side down)
Top View
Top View
DS010055-28
DS010055-54
www.national.com
March 2002
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