Product Summary

The TL431 is a three-terminal adjustable regulator series with a guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between Vref (approximately 2.5 volts) and 36 volts with two external resistors. The TL431 has a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. The TL431 is characterized for operation from -0oC to +70℃.

Parametrics

TL431 absolute maximum ratings: (1)Cathode Voltage VKA: 40 V; (2)Cathode Current Range (Continuous)IK: 100 ~ 150 mA; (3)Reference Input Current Range IREF: 0.05 ~ 10 mA; (4)Power Dissipation at 25℃ TO – 92 Package PD: 0.7 W; (5)Junction Temperature Range TJ: 0 ~ 150℃; (6)Operating Temperature Range Tg: 0 ~ 70℃; (7)Storage Temperature Range Tstg: -65 ~ +150℃.

Features

TL431 features: (1)Programmable Output Voltage to 40V; (2)Low Dynamic Output Impedance 0.2Ω; (3)Sink Current Capability of 0.1 mA to 100 mA; (4)Equivalent Full-Range Temperature Coefficient of 50 ppm/oC; (5)Temperature Compensated for Operation over Full Rated Operating Temperature Range; (6)Low Output Noise Voltage; (7)Fast Turn on Respons; (8)TO-92 or SOT-23 and SOT-89 ,SO8packages.

Diagrams

TL431 pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL431
TL431

Other


Data Sheet

Negotiable 
TL431/AZ/CZ
TL431/AZ/CZ

Other


Data Sheet

Negotiable 
TL431A(B)W5-7
TL431A(B)W5-7

Diodes Inc.

Voltage & Current References Adj Precision Shunt 0.2 Ohm Vref to 36V

Data Sheet

0-1: $0.32
1-10: $0.27
10-100: $0.20
100-250: $0.18
TL431ACCT
TL431ACCT

STMicroelectronics

Voltage & Current References 2.5V to 36V Shunt 1 to 100mA 0.22 Ohm

Data Sheet

0-1: $0.28
1-10: $0.22
10-100: $0.15
100-250: $0.13
TL431ACD
TL431ACD

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

0-1: $0.31
1-25: $0.20
25-100: $0.16
100-250: $0.14
TL431ACDBVR
TL431ACDBVR

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.26
1-25: $0.17
25-100: $0.14
100-250: $0.12
TL431ACDBVRE4
TL431ACDBVRE4

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.19
1-25: $0.14
25-100: $0.12
100-250: $0.10
TL431ACDBVRG4
TL431ACDBVRG4

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.28
1-25: $0.18
25-100: $0.15
100-250: $0.12