TLV431AFTA

TLV431 1.24V COST EFFECTIVE SHUNT REGULATOR Description Pin Assignments The TLV431 is a three-terminal, adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 20mA. The output voltage may be set to any chosen voltage between 1.24V and 18V by selection of two external divider resistors. The TLV431 can be used as a replacement for zener diodes in many applications requiring an improvement in zener performance. TLV431_H6 (SC70-6 [SOT363]) 1 6 ANODE N/C‡ 2 5 NC‡ REF 3 4 NC CATHODE The TLV431 is available in three grades with initial tolerances of 1%, 0.5%, and 0.2% for the A, B, and T grades respectively. TLV431_F (SOT23) Features REF  Low-Voltage Operation VREF = 1.24V   Temperature Range -40 to +125°C Reference Voltage Tolerance at +25°C  0.2% TLV431T  0.5% TLV431B  1% TLV431A Typical Temperature Drift  4mV (0°C to +70°C)  6mV (-40°C to +85°C)  11mV (-40°C to +125°C) 80µA Minimum Cathode Current 0.25Ω Typical Output Impedance Adjustable Output Voltage VREF to 18V Lead-Free Finish; RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) An Automotive-Compliant Part is Available Under Separate Datasheet (TLV431Q)        1 3 CATHODE ANODE 2 (Top View) TLV431_E5 (SOT25) N/C 1 N/C‡ 2 CATHODE 3 5 ANODE 4 REF (Top View) ‡ Pin should be left floating or connect to anode Typical Application Circuit Secondary side regulated supply (Top View) 3.3 V Optocoupler IF Primary side controller R3 R1 TLV431 R2 GND Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See https://www.diodes.com/quality/lead-free/ 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