Product Summary

The TL431AIDR is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. The TL431AIDR has a typical output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making the TL431AIDR excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies.

Parametrics

TL431AIDR absolute maxing ratings: (1)Cathode voltage, VKA: 37V; (2)Continuous cathode current range, IKA: -100 mA to 150 mA; (3)Reference input current range: -50μA to 10 mA; (4)Operating virtual junction temperature, TJ: 150℃; (5)Storage temperature range, Tstg: -65℃ to 150℃.

Features

TL431AIDR features: (1)Operation From -40℃ to 125℃; (2)Reference Voltage Tolerance at 25℃: 0.5% B Grade; 1% A Grade; 2% Standard Grade; (3)Low Output Noise; (4)0.2-Ω Typical Output Impedance; (5)Sink-Current Capability 1 mA to 100 mA; (6)Adjustable Output Voltage Vref to 36 V.

Diagrams

TL431AIDR block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL431AIDR
TL431AIDR

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

0-1: $0.32
1-25: $0.19
25-100: $0.16
100-250: $0.11
TL431AIDR2
TL431AIDR2

ON Semiconductor

Voltage & Current References 2.5-36V ADJ 1-100mA

Data Sheet

Negotiable 
TL431AIDRG4
TL431AIDRG4

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.25
1-25: $0.17
25-100: $0.14
100-250: $0.12
TL431AIDR2G
TL431AIDR2G

ON Semiconductor

Voltage & Current References 2.5-36V ADJ 1-100mA

Data Sheet

0-1: $0.23
1-25: $0.19
25-100: $0.13
100-500: $0.11
TL431AIDRE4
TL431AIDRE4

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

Negotiable