Product Summary

The TL431ACD integrated circuit is a three–terminal programmable shunt regulator diode. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V with two external resistors. The TL431ACD exhibits a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 W. The characteristics of TL431ACD make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies, and since the TL431ACD operates as a shunt regulator, it can be used as either a positive or negative voltage reference.

Parametrics

TL431ACD absolute maximum ratings: (1)Cathode to Anode Voltage: 37 V; (2)Cathode Current Range, Continuous: –100 to +150 mA; (3)Reference Input Current Range, Continuous: –0.05 to +10 mA; (4)Operating Junction Temperature: 150 ℃; (5)Operating Ambient Temperature Range: 0 to +70 ℃; (6)Storage Temperature Range: –65 to +150 ℃; (7)Total Power Dissipation @ TA = 25℃: Derate above 25 ℃ Ambient Temperature, D, LP Suffix Plastic Package 0.70 W, P Suffix Plastic Package 1.10 W, DM Suffix Plastic Package 0.52 W; (8)Total Power Dissipation @ TC = 25℃: Derate above 25℃ Case Temperature, D, LP Suffix Plastic Package 1.5 W, P Suffix Plastic Package 3.0 W.

Features

TL431ACD features: (1)Programmable Output Voltage to 36 V; (2)Voltage Reference Tolerance: ±0.4%, Typ @ 25℃ (TL431B); (3)Low Dynamic Output Impedance, 0.22 Ω Typical; (4)Sink Current Capability of 1.0 mA to 100 mA; (5)Equivalent Full-range Temperature Coefficient of 50 ppm/℃ Typical; (6)Temperature Compensated for Operation over Full Rated Operating Temperature Range; (7)Low Output Noise Voltage.

Diagrams

TL431ACD representative schematic diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
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
TL431ACDBVT
TL431ACDBVT

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.53
1-25: $0.41
25-100: $0.36
100-250: $0.30
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
TL431ACDBVTE4
TL431ACDBVTE4

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.46
1-25: $0.36
25-100: $0.32
100-250: $0.28
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
TL431ACDBZT
TL431ACDBZT

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.58
1-25: $0.44
25-100: $0.39
100-250: $0.31
TL431ACDCKR
TL431ACDCKR

Texas Instruments

Voltage & Current References Adjustable Precision Shunt Regulator

Data Sheet

0-1: $0.31
1-25: $0.20
25-100: $0.17
100-250: $0.14