TL432ASA-7 Diodes Incorporated

TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments TL431 The TL431 and TL432 are three terminal adjustable shunt (Top View) regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage 3REF may be set to any chosen voltage between 2.5 and 36 volts by selection of two external divider resistors. ANODE 1 The devices can be used as a replacement for zener diodes 2 CATHODE in many applications requiring an improvement in zener performance. Diodes TL431 has the same electrical SOT23 specifications as the industry standard 431 and is available (Top View) in 2 grades with initial tolerances of 1% and 0.5% for the A and B grades respectively. 5ANODE NC 1 Features NC 2 Temperature range -40 to 125C CATHODE 3 4REF Reference Voltage Tolerance at 25C TL431A: 2.495V 1.0%. SOT25 TL431B: 2.495V 0.5% Low Output Noise TL432 0.2 Typical Output Impedance (Top View) Sink Current Capability: 1mA to 100mA Adjustable Output Voltage: V to 36V REF 3 CATHODE SOT23 and SOT25: Available in Green Molding Compound (No Br, Sb) and Lead Free Finish/ RoHS 1 ANODE Compliant (Note 1) 2 REF Applications SOT23 Opto-Coupler Linearisers Shunt Regulators Improved Zener Variable Reference Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR Absolute Maximum Ratings (Note 2) 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 mW P Power Dissipation (Notes 3, 4) D SOT25 500 mW Notes: 2. 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. 3. T , max =150C. J 4. 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 September 2010 TL431/432 Diodes Incorporated www.diodes.com Document number: DS35050 Rev. 2 - 2 NEW PRODUCT