Nexperia TL431 Series Adjustable Precision Shunt Regulators

Nexperia TL431 Series Adjustable Precision Shunt Regulators are AEC-Q100 qualified with low output noise. They are three-terminal voltage references with an output voltage range of 2.495V to 36V, to be set by two external resistors. These shunt regulators have a programmable output voltage of up to 36V and three different reference voltage tolerances: standard grade (2%), A-Grade (1%), and B-Grade (0.5%). Applications include isolated feedback loops for Switch Mode Power Supplies (SMPS), precision current limiters and precision constant current sinks, and shunt regulators.

Features

  • AEC-Q100 qualified
  • Low output noise 
  • Size of 2.9mm x 1.3mm x 1mm
  • SOT23 package
  • Three different reference voltage tolerances: Standard grade: 2 %, A-Grade: 1 %, and B-Grade: 0.5 %

Applications

  • Isolated feedback loops for Switch Mode Power Supplies (SMPS)
  • Precision current limiters 
  • Precision constant current sinks
  • Shunt regulators

Technical Specifications

Parameters Values
Programmable Output Voltage Up to 36 V
Typical Temperature Drift 9mV (In a range of 0°C up to 70°C)
Typical Output Impedance 0.2Ω 
Sink Current Capability 1mA to 100mA
Reference Voltage 2440mV to 2550mV
Operating Temperature Range -40℃ to +125℃