TL431K Features The Reference Input Voltage Tolerance is 0.5% Sink Current Capability of 0.1mA to 100 mA Programmable Output Voltage 36V Programmable Low Output Noise Voltage and Fast Turn On Response The Typical Value of the Equivalent Temperature Factor in the Precision Regulator Whole Temperature Scope is 50 ppm/ Epoxy Meets UL 94 V-0 Flammability Rating Moisture Sensitivity Level 1 Halogen Free. Green Device (Note 1) Lead Free Finish/RoHS Compliant Suffix designates RoHS Compliant. See ordering information) SOT-23 Maximum Ratings Parameter Value Symbol Unit A D Cathode Voltage V 37 V KA 3 1. (R) REFERENCE Cathode Current Range I -100~150 mA K B C 2. (K) CATHODE 1 2 3. (A) ANODE Reference Input Current Range I 0.05~10 mA REF F E Power Dissipation at 25 P 0.30 W D 417 Thermal Resistance Junction to Ambient R /W JA G H J L K T Operating Temperature -40~85 opr DIMENSIONS Storage Temperature Range T -65~150 STG INCHES MM DIM NOTE MIN MAX MIN MAX A 0.110 0.120 2.80 3.04 B 0.083 0.104 2.10 2.64 Recommended Operating Conditions C 0.047 0.055 1.20 1.40 Parameter Symbol Min Max Unit D 0.034 0.041 0.85 1.05 E 0.067 0.083 1.70 2.10 V V Cathode Voltage 36 V KA REF F 0.018 0.024 0.45 0.60 Cathode Current Range I G 0.01 0.15 1.0 100 mA 0.0004 0.006 K H 0.035 0.043 0.90 1.10 Note: 1. Halogen freeGreen products are defined as those which contain <900ppm bromine, J 0.003 0.007 0.08 0.18 <900ppm chlorine (<1500ppm total Br + Cl) and <1000ppm antimony compounds. K 0.012 0.020 0.30 0.51 L 0.007 0.020 0.20 0.50 Marking Code: 431K Suggested Solder Pad Layout 0.031 0.800 0.035 0.900 0.079 inches 2.000 mm 0.037 0.950 0.037 0.950 Rev.3-3-12012020 1/7 MCCSEMI.COMTL431K Electrical Characteristics 25C (Unless Otherwise Specified) Parameter Symbol Test Conditions Min Typ Max Unit V V =V , I =10mA Reference Input Voltage 2.482 2.50 2.508 V ref KA REF KA V / V =V , I =10mA Deviation of Reference ref KA REF KA 4.5 17 mV Input Voltage T TminTaTmax Ratio of Change in Reference Input V =10V~V -1.0 -2.7 KA ref V / ref Voltage to the Change in Cathode V KA V =36V~10V -0.5 -2.0 KA Voltage I =10mA, KA I Reference Input Current 1.5 4.0 A ref R =10K , R = 1 2 I =10mA, Deviation of Reference Input KA I / ref R =10K , R = Current Over Full Temperature 0.4 1.2 A 1 2 T Range T =full Temperature A Minimum Cathode Current for I 0.45 1.0 mA KA(min) Regulation I V =40V, V =0V Off-State Cathode Current 0.05 0.5 A KA(off) KA REF Z I =1 to 100mA, f1.0KHz Dynamic Impedance 0.15 0.5 KA KA Rev.3-3-12012020 2/7 MCCSEMI.COM