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LM431B: Adjustable/2.5 V, 1% Tolerance Shunt Regulator

Datasheet: Programmable Shunt Regulator
Rev. 2 (275kB)
Product Overview
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» Product Change Notification
The LM431A / LM431B / LM431C are three terminal output adjustable regulators with thermal stability over the full operating temperature range. The output voltage can be set to any value between VREF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications.
Features
 
  • Programmable output voltage to 36 V
  • Low dynamic output impedance 0.2 Ω (Typical)
  • Sink current capability of 1.0 to 100 mA
  • Equivalent full-range temperature coefficient of 50 ppm/°C (Typical)
  • Temperature compensated for operation over full rated operating temperature range
  • Low output noise voltage
  • Fast turn-on response
Applications
  • This product is general usage and suitable for many different applications.
Technical Documentation & Design Resources
Data Sheets (1) Package Drawings (2)
Availability & Samples
Specifications
Product
Status
Compliance
Description
Package
MSL
Container
Budgetary Price/Unit
Type
Case Outline
Type
Temperature
Type
Qty.
LM431BCMX Last Shipments
Pb-free
LM431B SOIC-8 751EB 1 260 Tape and Reel 3000 $0.1364
LM431BCZX Active
Pb-free
LM431B TO-92-3 LF 135AR NA Tape and Reel 2000 $0.0628
LM431BCZXA Active
Pb-free
LM431B TO-92-3 LF 135AR NA Fan-Fold 2000 $0.0628
LM431BIZX Active
Pb-free
LM431B TO-92-3 LF 135AR NA Tape and Reel 2000 $0.0628
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 15,000
Market Leadtime (weeks) : Contact Factory
ON Semiconductor   (2020-09-02 00:00) : 938,000
Market Leadtime (weeks) : Contact Factory
Market Leadtime (weeks) : Contact Factory

Product
Description
Pricing ($/Unit)
Compliance
Status
Type
V(BR) Typ (V)
Tolerance (%)
IQ Typ (mA)
IR Min (mA)
VF Max (V)
TA Min (°C)
TA Max (°C)
Package Type
LM431BCZX  
 $0.0628 
Pb
 Active   
Adjustable
2.5
1
-
0.0015
36
-25
85
TO-92-3 LF
LM431BCZXA  
 $0.0628 
Pb
 Active   
Adjustable
2.5
1
-
0.0015
36
-25
85
TO-92-3 LF
LM431BIZX  
 $0.0628 
Pb
 Active   
Adjustable
2.5
1
-
0.0015
36
-40
85
TO-92-3 LF
Case Outlines
135AR    751EB   
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