Product Summary

The TL431ACDR is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage of TL431ACDR can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. It has a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The TL431ACDR has exactly the same functionality and electrical specifications as the TL431, but has different pinouts for the DBV, DBZ, and PK packages.

Parametrics

TL431ACDR absolute maximum ratings: (1)Cathode voltage, VKA: 37 V; (2)Continuous cathode current range, IKA: -100 mA to 150 mA; (3)Reference input current range: -50 μA to 10 mA; (4)Operating virtual junction temperature, TJ: 150℃; (5)Storage temperature range, Tstg: -65℃ to 150℃.

Features

TL431ACDR features: (1)Operation From -40℃ to 125℃; (2)Reference Voltage Tolerance at 25℃: 0.5%: B Grade, 1%: A Grade, 2%: Standard Grade; (3)Typical Temperature Drift (TL431B): 6 mV (C Temp), 14 mV (I Temp, Q Temp); (4)Low Output Noise; (5)0.2-Ω Typical Output Impedance; (6)Sink-Current Capability: 1 mA to 100 mA; (7)Adjustable Output Voltage: Vref to 36 V.

Diagrams

TPA2000D4DAPR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
TL431ACDR
TL431ACDR

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

0-1: $0.27
1-25: $0.17
25-100: $0.15
100-250: $0.12
TL431ACDR2
TL431ACDR2

ON Semiconductor

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

Data Sheet

Negotiable 
TL431ACDR2G
TL431ACDR2G

ON Semiconductor

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

Data Sheet

0-1: $0.22
1-25: $0.18
25-100: $0.13
100-500: $0.11
TL431ACDRG4
TL431ACDRG4

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
TL431ACDRE4
TL431ACDRE4

Texas Instruments

Voltage & Current References Adj Shunt

Data Sheet

Negotiable