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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

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

    Features

  • 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
    Automotive Compliant PPAP No
    Reference Voltage 2.495 V
    Accuracy 0.5, 1 %
    Maximum Input 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 Authorized Distributor Quantity Inventory Date Buy Online Region
    TL431AS-13 Mouser Electronics Inc. 1710 9/23/2020 Buy Now United States
    TL431AS-13 Avnet 150000 9/22/2020 Buy Now United States
    TL431ASA-7 Avnet EU 204000 9/23/2020 Buy Now Germany
    TL431ASA-7 Arrow Electronics 2907 9/23/2020 Buy Now United States
    TL431ASA-7 Arrow Electronics 12000 9/23/2020 Buy Now United States
    TL431ASA-7 Digi-Key Electronics 75755 9/23/2020 Buy Now United States
    TL431ASA-7 Farnell, An Avnet Company 7987 9/23/2020 Buy Now England
    TL431ASA-7 Mouser Electronics Inc. 23250 9/23/2020 Buy Now United States
    TL431ASA-7 RS Components Ltd. 73350 9/23/2020 Buy Now Japan
    TL431ASA-7 Future Electronics 2994 9/22/2020 Buy Now Canada
    TL431AW5-7 Arrow Electronics 975 9/23/2020 Buy Now United States
    TL431AW5-7 Arrow Electronics Central EU 54000 9/23/2020 Buy Now Germany
    TL431AW5-7 Digi-Key Electronics 14 9/23/2020 Buy Now United States
    TL431AW5-7 Mouser Electronics Inc. 11414 9/23/2020 Buy Now United States
    TL431AW5-7 RS Components 150 9/23/2020 Buy Now England
    TL431AW5-7 RS Components Ltd. 150 9/23/2020 Buy Now Japan
    TL431AW5-7 Avnet 24000 9/22/2020 Buy Now United States
    TL431BSA-7 Avnet EU 15000 9/23/2020 Buy Now Germany
    TL431BSA-7 Arrow Electronics 14 9/23/2020 Buy Now United States
    TL431BSA-7 Digi-Key Electronics 84123 9/23/2020 Buy Now United States
    TL431BSA-7 Farnell, An Avnet Company 3400 9/23/2020 Buy Now England
    TL431BSA-7 Mouser Electronics Inc. 21416 9/23/2020 Buy Now United States
    TL431BSA-7 RS Components 1050 9/23/2020 Buy Now England
    TL431BSA-7 RS Components Ltd. 1050 9/23/2020 Buy Now Japan
    TL431BW5-7 Digi-Key Electronics 2338 9/23/2020 Buy Now United States
    TL431BW5-7 Farnell, An Avnet Company 1643 9/23/2020 Buy Now England
    TL431BW5-7 Mouser Electronics Inc. 3081 9/23/2020 Buy Now United States
    TL431BW5-7 RS Components 2250 9/23/2020 Buy Now England
    TL431BW5-7 RS Components Ltd. 2250 9/23/2020 Buy Now Japan