TL431, A, B Series, NCV431A, B Programmable Precision References The TL431, A, B integrated circuits are three terminal programmable shunt regulator diodes. These monolithic IC voltage TL431, A, B Series, NCV431A, B Symbol Representative Schematic Diagram Component values are nominal Cathode (K) Cathode (K) Reference (R) 800 800 Reference Anode (R) 20 pF (A) Representative Block Diagram 150 3.28 k 4.0 k 20 pF Reference Cathode 10 k 2.4 k 7.2 k (R) (K) + - 1.0 k 2.5 V ref 800 Anode (A) Anode (A) This device contains 12 active transistors. MAXIMUM RATINGS (Full operating ambient temperature range applies, unless otherwise noted.) Rating Symbol Value Unit Cathode to Anode Voltage V 37 V KA Cathode Current Range, Continuous I 100 to +150 mA K Reference Input Current Range, Continuous I 0.05 to +10 mA ref Operating Junction Temperature T 150 C J Operating Ambient Temperature Range T C A TL431I, TL431AI, TL431BI 40 to +85 TL431C, TL431AC, TL431BC 0 to +70 NCV431AI, NCV431B, TL431BV 40 to +125 Storage Temperature Range T 65 to +150 C stg Total Power Dissipation T = 25C P W A D Derate above 25C Ambient Temperature D, LP Suffix Plastic Package 0.70 P Suffix Plastic Package 1.10 DM Suffix Plastic Package 0.52 Total Power Dissipation T = 25C P W C D Derate above 25C Case Temperature D, LP Suffix Plastic Package 1.5 P Suffix Plastic Package 3.0 ESD Rating HBM >2000 V MM >200 Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. RECOMMENDED OPERATING CONDITIONS Condition Symbol Min Max Unit Cathode to Anode Voltage V V 36 V KA ref Cathode Current I 1.0 100 mA K THERMAL CHARACTERISTICS D, LP Suffix P Suffix DM Suffix Package Package Package Characteristic Symbol Unit Thermal Resistance, JunctiontoAmbient R 178 114 240 C/W JA Thermal Resistance, JunctiontoCase R 83 41 C/W JC