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Description

The TL431 is three terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to any chosen voltage between 2.5 and 36 volts by selection of two external divider resistors. The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. Diodes’ TL431 has the same electrical specifications as the industry standard ‘431 and is available in 2 grades with initial tolerances of 1% and 0.5% for the A and B grades respectively.

Application(s)

  • Opto-Coupler Linearisation
  • Secondary side regulation
  • Shunt Regulators
  • Improved Zener
  • Variable Reference

    Feature(s)

  • Temperature range -40 to 125°C
  • Reference Voltage Tolerance at 25°C
  • TL431A: 2.495V ± 1.0%.
  • TL431B: 2.495V ± 0.5%
  • Low Output Noise
  • 0.2Ω Typical Output Impedance
  • Sink Current Capability: 1mA to 100mA
  • Adjustable Output Voltage: VREF to 36V
  • SOT23 and SOT25: Available in “Green” Molding Compound (No Br, Sb) and Lead Free Finish/ RoHS Compliant
  • Product Specifications

    Product Parameters

    Qualified to AECQ10x No
    Compliance (Only Automotive supports PPAP) No
    ReferenceVoltage 2.495 V
    Accuracy 0.5, 1 %
    MaximumInput Voltage 36 V
    Sink Current 100 mA
    Minimum Cathode Current for Regulation Typ 400 µA
    Maximum Slope Resistance 0.5 Ω
    Operating Ambient Temperature Range -40 to 125 °C

    Related Content

    Packages
    SOT23
    SOT25

    Technical Documents

    Recommended Soldering Techniques

    TN1.pdf

    RoHS CofC

    Orderable Part Number Buy from Distributor / Contact Sales Request Samples
    TL431AS-13

    TL431AS-13

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Avnet 92500 4/18/2021 United States Buy Now
    Mouser Electronics Inc. 1580 4/18/2021 South America, North America, Asia, Europe, Middle East Buy Now
    Request Sample
    TL431ASA-7

    TL431ASA-7

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Arrow Electronics 117 4/18/2021 United States Buy Now
    Arrow Electronics Central EU 6000 4/18/2021 Europe Buy Now
    Digi-Key Electronics 1111 4/18/2021 Europe, Asia, North America Buy Now
    RS Components Ltd. 35250 4/18/2021 Japan Buy Now
    Future Electronics 1294 4/17/2021 Canada Buy Now
    Rutronik GmbH 6000 4/16/2021 Germany Buy Now
    Micronetics GmbH 6000 4/15/2021 Germany Contact Sales
    Request Sample
    TL431AW5-7

    TL431AW5-7

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Arrow Electronics 2995 4/18/2021 United States Buy Now
    Arrow Electronics Central EU 2000 4/18/2021 Europe Buy Now
    Avnet 63000 4/18/2021 United States Buy Now
    Digi-Key Electronics 14 4/18/2021 Europe, Asia, North America Buy Now
    Mouser Electronics Inc. 4786 4/18/2021 South America, North America, Asia, Europe, Middle East Buy Now
    RS Components Ltd. 100 4/18/2021 Japan Buy Now
    Request Sample
    TL431BSA-7

    TL431BSA-7

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Arrow Electronics 4 4/18/2021 United States Buy Now
    Arrow Electronics 45000 4/18/2021 United States Buy Now
    Arrow/Components Agent Ltd. 12000 4/18/2021 Hong Kong Buy Now
    Avnet 12000 4/18/2021 United States Buy Now
    Digi-Key Electronics 55597 4/18/2021 Europe, Asia, North America Buy Now
    Mouser Electronics Inc. 8348 4/18/2021 South America, North America, Asia, Europe, Middle East Buy Now
    RS Components Ltd. 450 4/18/2021 Japan Buy Now
    Request Sample
    TL431BW5-7

    TL431BW5-7

    Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
    Avnet 24000 4/18/2021 United States Buy Now
    Digi-Key Electronics 2086 4/18/2021 Europe, Asia, North America Buy Now
    Farnell, An Avnet Company 1531 4/18/2021 England Buy Now
    Farnell, An Avnet Company 1531 4/18/2021 England Buy Now
    Mouser Electronics Inc. 81 4/18/2021 South America, North America, Asia, Europe, Middle East Buy Now
    RS Components Ltd. 1900 4/18/2021 Japan Buy Now
    Request Sample

    PCNs

    Product Change Notices

    PCN # Issue Date Implementation Date Subject
    PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site
    PCN-2505 2021-01-26 2021-07-26 Device End of Life (EOL)