LM431A

Programmable Shunt Regulator LM431A, LM431B, LM431C 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 W. 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 W (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 www.onsemi.com 123 TO−92 CASE 135AN 1 2 3 TO−92 CASE 135AR MARKING DIAGRAM LM431 XXXX ALYW LM431XXXX A L YW = Specific Device Code = Assembly Location = Wafer Lot = Assembly Start Week PIN CONNECTIONS Figure 1. Block Diagram © Semiconductor Components Industries, LLC, 2003 April, 2021 − Rev. 3 123 1 23 1 − Ref 2 − Anode 3 − Cathode ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 6 of this data sheet. 1 Publication Order Number: LM431A/D LM431A, LM431B, LM431C ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VKA IKA IREF PD RθjA TOPR ...