LM431SA Datasheet | onsemi

Description The LM431SA / LM431SB / LM431SC are three-terminal the output adjustable regulators with thermal stability over operating temperature range. The output voltage can be set 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 W. Active output circuit provides a sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. Features - Programmable Output Voltage to 36 V - Low Dynamic Output Impedance: 0.2 W (Typical) - Sink Current Capability: 1.0 to 100 m A - Equivalent Full-Range Temperature Coefficient of 50 ppm/°C (Typical) - Temperature pensated for Operation Over Full Rated Operating Temperature Range - Low Output Noise Voltage - Fast Turn-on Response - These Devices are Pb-Free, Halogen Free/BFR Free and are Ro HS pliant SOT-89 CASE 528AH SOT-23FL CASE 318AB SOT-23 CASE 318BM 1. Ref 2. Anode 3. Cathode 1. Cathode 2. Ref 3. Anode M32 1. Ref 2. Cathode 3. Anode M3 1. Cathode 2. Ref 3. Anode ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet. NOTE: Some of the devices on this data sheet have been DISCONTINUED. Please refer to the table on page 9. BLOCK DIAGRAM Figure 1. Block Diagram © Semiconductor ponents Industries, LLC, 2018 April, 2025 - Rev. 11 Publication Order Number: LM431SA/D LM431SA, LM431SB, LM431SC ABSOLUTE MAXIMUM RATINGS (TA = 25 °C unless otherwise noted) Symbol Parameter Value...