Datasheet LM431A, LM431B, LM431C (ON Semiconductor)

link to page 6
DATA SHEET www.onsemi.com
Programmable Shunt Regulator LM431A, LM431B, LM431C
Description
1 2 1 3 2 The LM431A/LM431B/LM431C are three−terminal output 3 adjustable regulators with thermal stability over the full operating
TO−92 TO−92
temperature range. The output voltage can be set to any value between
CASE 135AN CASE 135AR
VREF (approximately 2.5 V) and 36 V with two external resistors. These devices have a typical dynamic output impedance of 0.2 W.
MARKING DIAGRAM
Active output circuit provides a sharp turn−on characteristic, making these devices excellent replacements for Zener diodes in many applications. LM431 XXXX
Features
ALYW • 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 LM431XXXX = Specific Device Code (Typical) A = Assembly Location • L = Wafer Lot Temperature Compensated for Operation Over Full Rated YW = Assembly Start Week Operating Temperature Range • Low Output Noise Voltage • Fast Turn−on Response
PIN CONNECTIONS
1 − Ref 2 − Anode 3 − Cathode 1 2 3 1 2 3
ORDERING INFORMATION
See detailed ordering and shipping information in the package
Figure 1. Block Diagram
dimensions section on page 6 of this data sheet. © Semiconductor Components Industries, LLC, 2003
1
Publication Order Number:
April, 2021 − Rev. 3 LM431A/D