Description

The LM431A / LM431B / LM431C are three-terminal output adjustable regulators with thermal stability over the full operating temperature range. The output voltage can be set to any value between VREF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 Ω. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications.

Features

• Programmable Output Voltage to 36 V

• Low Dynamic Output Impedance: 0.2 Ω (Typical)

• Sink Current Capability: 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