Product Summary

The 431AC is a three-terminal adjustable shunt regulator 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. The 431AC has a typical output impedance of 0.2 Ω. Active output circuitry provides a very sharp turn-on characteristic. The 431AC is suitable in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. The 431AC is offered in three grades, with initial tolerances of 0.5%, 1%, and 2%, for the B, A, and standard grade, respectively. In addition, low output drift vs temperature ensures good stability over the entire temperature range.

Parametrics

431AC 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

431AC 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: 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

431AC functional block diagram

431AL
431AL
Other

Data Sheet
Negotiable