TL431: Cost-effective shunt regulator solution


The TL431 is a three-terminal adjustable shunt regulators, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors.


  • Operation from -40°C to 125°C
  • Reference voltage tolerance at 25°C
  • 1%: A grade
  • 2%: standard grade
  • Low output noise
  • 0.2-Ω typical output impedance
  • Sink-current capability: 1 mA to 100 mA
  • Adjustable output voltage: Vref to 36 V

TL431: Cost-effective shunt regulator solution – [Link]

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