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Description as follow:

The TL431IPK is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage of TL431IPK can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors (see Figure 17). It has a typical output impedance of 0.2 Ω.

Parametrics

TL431IPK absolute maximum ratings: (1)Cathode voltage, VKA: 37 V; (2)Continuous cathode current range, IKA: 100 mA to 150 mA; (3)Reference input current range: -50 μA to 10 mA; (4)Operating virtual junction temperature, TJ: 150℃; (5)Storage temperature range, Tstg: -65℃ to 150℃.

Features

TL431IPK features: (1)Operation From -40℃ to 125℃; (2)Reference Voltage Tolerance at 25℃: 0.5%: B Grade, 1%: A Grade, 2%: Standard Grade; (3)Typical Temperature Drift (TL431B): 6 mV (C Temp), 14 mV (I Temp, Q Temp); (4)Low Output Noise; (5)0.2-Ω Typical Output Impedance; (6)Sink-Current Capability: 1 mA to 100 mA; (7)Adjustable Output Voltage: Vref to 36 V.

Diagrams