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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

    RoHS CofC

    Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
    TL431AS-13 Mouser Electronics Inc. 1760 1/26/2020 Buy Now United States
    TL431ASA-7 Avnet EU 3000 1/26/2020 Buy Now Germany
    TL431ASA-7 Arrow Electronics 9 1/26/2020 Buy Now United States
    TL431ASA-7 Arrow Electronics Central EU 18000 1/26/2020 Buy Now Germany
    TL431ASA-7 Digi-Key Electronics 91637 1/26/2020 Buy Now United States
    TL431ASA-7 Farnell, An Avnet Company 10558 1/26/2020 Buy Now England
    TL431ASA-7 Mouser Electronics Inc. 34365 1/26/2020 Buy Now United States
    TL431ASA-7 RS Components 1350 1/26/2020 Buy Now England
    TL431ASA-7 RS Components Ltd. 1050 1/25/2020 Buy Now Japan
    TL431ASA-7 Future Electronics - Europe 66000 1/24/2020 England
    TL431AW5-7 Arrow Electronics 2000 1/26/2020 Buy Now United States
    TL431AW5-7 Arrow Electronics Central EU 18000 1/26/2020 Buy Now Germany
    TL431AW5-7 Digi-Key Electronics 14 1/26/2020 Buy Now United States
    TL431AW5-7 RS Components 200 1/26/2020 Buy Now England
    TL431AW5-7 Avnet 45000 1/25/2020 Buy Now United States
    TL431AW5-7 RS Components Ltd. 200 1/25/2020 Buy Now Japan
    TL431BSA-7 Arrow Electronics 175 1/26/2020 Buy Now United States
    TL431BSA-7 Arrow/Components Agent Ltd. 3000 1/26/2020 Buy Now Hong Kong
    TL431BSA-7 Digi-Key Electronics 190491 1/26/2020 Buy Now United States
    TL431BSA-7 Farnell, An Avnet Company 2540 1/26/2020 Buy Now England
    TL431BSA-7 RS Components 350 1/26/2020 Buy Now England
    TL431BSA-7 Avnet 1490 1/25/2020 Buy Now United States
    TL431BSA-7 RS Components Ltd. 350 1/25/2020 Buy Now Japan
    TL431BSA-7 Rutronik GmbH 21000 1/24/2020 Buy Now Germany
    TL431BSA-7 CEAC International Ltd. 100 1/13/2020 China
    TL431BW5-7 Digi-Key Electronics 2338 1/26/2020 Buy Now United States
    TL431BW5-7 RS Components 2275 1/26/2020 Buy Now England
    TL431BW5-7 RS Components Ltd. 2275 1/25/2020 Buy Now Japan
    TL431BW5-7 Rutronik GmbH 21000 1/24/2020 Buy Now Germany