Product Summary

The TL431C is a 3-terminal adjustable shunt regulator with specified thermal stability over applicable automotive and commercial temperature ranges. The output voltage may be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. The TL431C has a typical output impedance of 0.2W. Active output circuitry provides a very sharp turn-on characteristic, making the TL431C excellent replacements for zener diodes in many applications like on-board regulation, adjustable power supplies and switching power supplies.

Parametrics

TL431C absolute maximum ratings: (1)VKA Cathode voltage: 37 V; (2)Continuous cathode current range: –100 to +150 mA; (3)Reference input current range: 0.05 to 10 mA; (4)Operating free-air temperature range Tamb C suffix: 0 to +70 °C, I suffix –40 to +85 °C; (5)TSTG Temperature storage range: –65 to 150 °C; (6)Lead temperature 1.6mm (1/16 in.)from case for 10 sec: D or P pkgs: 260 °C; (7)Lead temperature 1.6mm (1/16 in.)from case for 60 sec: LP pkg: 300 °C.

Features

TL431C features: (1)Equivalent full-range temperature coefficient: 30ppm/°C; (2)0.2W typical output impedance; (3)Sink current capability: 1mA to 100mA; (4)Low output noise; (5)Adjustable output voltage: VREF to 36V.

Diagrams

TL431C pin connection 

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL431CCT
TL431CCT

STMicroelectronics

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

Data Sheet

0-1: $0.26
1-10: $0.21
10-100: $0.14
100-250: $0.12
TL431CDBVR
TL431CDBVR

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

0-1: $0.24
1-25: $0.16
25-100: $0.13
100-250: $0.11
TL431CDBVT
TL431CDBVT

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.45
1-25: $0.35
25-100: $0.31
100-250: $0.27
TL431CDE4
TL431CDE4

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

Negotiable 
TL431CLP
TL431CLP

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

0-1: $0.26
1-25: $0.15
25-100: $0.12
100-250: $0.09
TL431CLPG
TL431CLPG

ON Semiconductor

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

Data Sheet

0-1: $0.20
1-25: $0.15
25-100: $0.10
100-500: $0.08
TL431CDMR2G
TL431CDMR2G

ON Semiconductor

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

Data Sheet

0-1: $0.27
1-25: $0.20
25-100: $0.17
100-500: $0.13
TL431CLPRMG
TL431CLPRMG

ON Semiconductor

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

Data Sheet

0-1: $0.26
1-25: $0.18
25-100: $0.14
100-500: $0.10