TL431AS-13 Diodes Incorporated

NOT RECOMMENDED FOR NEW DESIGN USE AS431/AS431H FAMILY TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The TL431 and TL432 are three terminal adjustable shunt TL431 (Top View) regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage CATHODE 1 may be set to any chosen voltage between 2.5 and 36 volts by selection of two external divider resistors. 3 ANODE The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener 2 REF performance. Diodes TL431 has the same electrical SOT23 specifications as the industry standard 431 and is available in 2 grades with initial tolerances of 1% and 0.5% for the (Top View) A and B grades respectively. NC 5 ANODE Features Leave floating or 2 connect to pin 5 Temperature range -40 to +125C Reference Voltage Tolerance at 25C CATHODE 3 REF 4 TL431A: 2.495V 1.0% SOT25 TL431B: 2.495V 0.5% Low Output Noise (Top View) 0.2 Typical Output Impedance CATHODE Sink Current Capability: 1mA to 100mA 1 8 REF Adjustable Output Voltage: V to 36V ANODE 2 7 ANODE REF All devices are: 3 6 ANODE ANODE Totally Lead-Free & Fully RoHS compliant NC 4 5 NC (Notes 1 & 2) SO-8 Halogen and Antimony Free. Green Device (Note 3) TL432 Applications (Top View) Opto-Coupler Linearisers Shunt Regulators REF 1 Improved Zener 3 ANODE Variable Reference CATHODE 2 SOT23 Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR Absolute Maximum Ratings (Note 4) Symbol Parameter Rating Unit V Cathode Voltage 40 V KA I Continuous Cathode Current 150 mA KA I Reference Input Current -0.050 to +10 mA REF T Operating Junction Temperature +150 C J T Storage Temperature -55 to +150 C ST SOT23 330 P Power Dissipation (Notes 5, 6) SOT25 500 mW D SO-8* 700 Notes: 4. Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extended periods, may reduce device reliability. Unless otherwise stated voltages specified are relative to the ANODE pin. 5. T , =150C. J MAX 6. Ratings apply to ambient temperature at 25C. Recommended Operating Conditions Symbol Parameter Min Max Unit V Cathode Voltage V 36 V KA REF I Cathode Current 1 100 mA KA T Operating Ambient Temperature -40 +125 C A 2 of 14 June 2021 TL431/TL432 Diodes Incorporated www.diodes.com Document number: DS35050 Rev. 7 - 3