General description
Three-terminal shunt regulator family with an output voltage range between Vref and 36 V, to be set by two external resistors.
• The TL431xDBZR types feature an enhanced stability area with a very low load capacity requirement.
• The TL431xFDT types offer an enhanced stability area and a higher ElectroMagnetic Interference (EMI) ruggedness, for example, for Switch Mode Power Supply (SMPS) applications.
• The TL431xSDT types are designed for standard requirements and linear applications.

Features and benefits
 Programmable output voltage up to 36 V
 Three different reference voltage tolerances:
 Standard grade: 2 %
 A-Grade: 1 %
 B-Grade: 0.5 %
 Typical temperature drift: 6 mV (in a range of 0 C up to 70 C)
 Low output noise
 Typical output impedance: 0.2 
 Sink current capability: 1 mA to 100 mA
 AEC-Q100 qualified (grade 1)

Applications
 Shunt regulator
 Precision current limiter
 Precision constant current sink
 Isolated feedback loop for Switch Mode Power Supply (SMPS)