LM431SAI: Adjustable/2.5 V, 2% Tolerance Shunt Regulator

The LM431SAI is three terminal output adjustable regulator with thermal stability over operating temperature range from -40°C to +85°C. The output voltage can be set any value between VREF (approximately 2.5 V) and 36 V with two external resistors. This device has a typical dynamic output impedance of 0.2 Ω. Active output circuit provides a sharp turn-on characteristic, making this device excellent replacement for Zener diodes in many applications.

Features

• Programmable Output Voltage to 36 V
• Low Dynamic Output Impedance 0.2 Ω Typical
• Sink Current Capability of 1.0 to 100 mA
• Equivalent Full-Range Temperature Coefficient of 50 ppm/°C Typical
• Temperature Compensated for Operation Over Full Rated Operating Temperature Range
• Low Output Noise Voltage
• Fast Turn-on Response