Voltage Reference, Programmable Precision, Shunt Regulator

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Overview

The TL431, A, B integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V with two external resistors. These devices exhibit a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 W. The characteristics of these references 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 TL431, A, B operates as a shunt regulator, it can be used as either a positive or negative voltage reference.

  • Programmable Output Voltage to 36 V
  • Voltage Reference Tolerance: +/- 0.4%, Typ @ 25°C (TL431B)
  • Low Dynamic Output Impedance, 0.22 W Typical
  • Sink Current Capability of 1.0 mA to 100 mA
  • Equivalent Full-Range Temperature Coefficient of 50 ppm/ °C Typical
  • Temperature Compensated for Operation over Full Rated Operating Temperature Range
  • Low Output Noise Voltage
  • Pb-Free Packages are Available

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Product

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CAD Models

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Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Type

V(BR) Typ (V)

Tolerance (%)

IQ Typ (mA)

IR Min (mA)

VF Max (V)

TA Min (°C)

TA Max (°C)

Reference Price

NCV431AIDMR2G

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Active

CAD Model

Pb

A

H

P

Micro8

1

260

REEL

4000

Y

Adjustable

2.5

1

0.5

1

36

-40

125

$0.2345

More Details

NCV431AIDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Adjustable

2.5

1

0.5

1

36

-40

125

$0.3373

More Details

NCV431BVDMR2G

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Active

CAD Model

Pb

A

H

P

Micro8

1

260

REEL

4000

Y

Adjustable

2.5

0.4

0.5

1

36

-40

125

$0.336

More Details

NCV431BVDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Adjustable

2.5

0.4

0.5

1

36

-40

125

$0.24

More Details

TL431CDG

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Last Shipments

CAD Model

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

More Details

TL431CDMR2G

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Obsolete

CAD Model

Pb

A

H

P

Micro8

1

260

REEL

4000

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

More Details

TL431CDR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Adjustable

2.5

2.2

-

1

36

0

70

$0.1544

More Details

TL431CLP

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Obsolete

CAD Model

Pb

A

H

P

TO-92

NA

0

BLKBG

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

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TL431CLPG

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Active

CAD Model

Pb

A

H

P

TO-92

NA

0

BLKBG

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

$0.1301

More Details

TL431CLPRAG

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Active

CAD Model

Pb

A

H

P

TO-92

NA

0

REEL

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

$0.1312

More Details

TL431CLPREG

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Obsolete

CAD Model

Pb

A

H

P

TO-92

NA

0

REEL

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

More Details

TL431CLPRMG

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Obsolete

CAD Model

Pb

A

H

P

TO-92

NA

0

FNFLD

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

More Details

TL431CLPRPG

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Active

CAD Model

Pb

A

H

P

TO-92

NA

0

FNFLD

2000

N

Adjustable

2.5

2.2

-

1

36

0

70

$0.1312

More Details

TL431CPG

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Adjustable

2.5

2.2

-

1

36

0

70

Price N/A

More Details

TL431IDG

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Obsolete

CAD Model

Pb

A

H

P

SOIC-8

1

260

TUBE

98

N

Adjustable

2.5

2.2

-

1

36

-40

85

Price N/A

More Details

TL431IDMR2G

Loading...

Obsolete

CAD Model

Pb

A

H

P

Micro8

1

260

REEL

4000

N

Adjustable

2.5

2.2

-

1

36

-40

85

Price N/A

More Details

TL431IDR2G

Loading...

Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

N

Adjustable

2.5

2.2

-

1

36

-40

85

$0.1544

More Details

TL431ILPG

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Active

CAD Model

Pb

A

H

P

TO-92

NA

0

BLKBG

2000

N

Adjustable

2.5

2.2

-

1

36

-40

85

$0.1301

More Details

TL431ILPRAG

Loading...

Active

CAD Model

Pb

A

H

P

TO-92

NA

0

REEL

2000

N

Adjustable

2.5

2.2

-

1

36

-40

85

$0.1312

More Details

TL431ILPRPG

Loading...

Active

CAD Model

Pb

A

H

P

TO-92

NA

0

FNFLD

2000

N

Adjustable

2.5

2.2

-

1

36

-40

85

$0.1312

More Details

TL431IPG

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Obsolete

CAD Model

Pb

A

H

P

PDIP-8

NA

0

TUBE

50

N

Adjustable

2.5

2.2

-

1

36

-40

85

Price N/A

More Details

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