TL432ASA-7

TL431/TL432 ADJUSTABLE PRECISION SHUNT REGULATOR Description Pin Assignments The TL431 and TL432 are three terminal adjustable shunt regulators offering excellent temperature stability and output current handling capability up to 100mA. The output voltage may be set to any chosen voltage between 2.5 and 36 volts by selection of two external divider resistors. The devices can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. Diodes’ TL431 has the same electrical specifications as the industry standard ‘431 and is available in 2 grades with initial tolerances of 1% and 0.5% for the A and B grades respectively. TL431 (Top View) CATHODE 1 3 ANODE REF 2 SOT23 (Top View) 5 ANODE NC Features • • • • • • • Leave floating or 2 connect to pin 5 Temperature range -40 to +125ºC Reference Voltage Tolerance at 25°C • TL431A: 2.495V ± 1.0% • TL431B: 2.495V ± 0.5% CATHODE 3 SOT25 Low Output Noise 0.2Ω Typical Output Impedance Sink Current Capability: 1mA to 100mA Adjustable Output Voltage: VREF to 36V All devices are: • Totally Lead-Free & Fully RoHS compliant (Notes 1 & 2) • Halogen and Antimony Free. “Green” Device (Note 3) (Top View) CATHODE 1 8 REF ANODE 2 7 ANODE ANODE 3 6 ANODE NC 4 5 NC SO-8 SO-8 is a future product TL432 Applications • • • • 4 REF (Top View) Opto-Coupler Linearisers Shunt Regulators Improved Zener Variable Reference REF 1 3 ANODE CATHODE 2 SOT23 Notes: TL431 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen and Antimony free, "Green" and Lead-Free. 3. Halogen and Antimony free "Green” products are defined as those which contain