TL431K Adjustable Shunt Regulator Elektronische Bauelemente RoHS Compliant Product SC-59 Description The TL431K series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature ranges. The output voltage may be set to any value between VREF (approximately 2.495V) and 36V with two extermal resistors. In provides very wide applications, including shunt regulator, series regulator, switching regulator, voltage reference and others. A L S B Top View D G J C K H Dim Min Max A 2.70 3.10 B 1.40 1.60 C 1.00 1.30 D 0.35 0.50 G 1.70 2.10 H 0.00 0.10 J 0.10 0.26 K 0.20 0.60 L 0.85 1.15 S 2.40 2.80 All Dimension in mm o Absolute Maximum Ratings at Ta=25 C Parameter Symbol Ratings Unit Cathode Voltage VKA 37 V Cathode Current Range (Continuous) IKA -100~+150 mA Reference Input Current Range IREF -0.05~+10 mA Total Power Dissipation PD 225 mW Tj, Tstg -65~+150 Operating Junction and Storage Temperature Range o C o Characteristics at Ta=25 C Parameter Symbol VKA Cathode Voltage IKA Cathode Current TL431KC Reference Input Voltage TL431KB TL431KA Deviation of Reference Input Voltage Over Temperature (Note) Ratio of Change in Reference Input Voltage to The Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Min. Cathode Current For Regulation Off-State Cathode Current Dynamic Impedance o o Note: TMIN=0 C, TMAX=+70 C http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. B VREF VREF/ T Min. Typ. Max. Unit VREF _ 36 V 1 2.445 _ 100 2.545 mA 2.495 2.495 2.520 V 2.495 2.507 4.5 17 2.470 2.483 _ _ mV Test Condition VKA=VREF,IK=10mA VKA=VREF,IK=10mA TMIN ≤ TA ≤ TMAX VKA=10V~VREF IK=10mA VKA=36V~10V VREF/ VKA _ -1.0 -2.7 -0.5 -2 IREF _ 1.5 4 uA IREF/ T _ 0.4 1.2 uA IKA(min) _ 0.45 1.0 mA VKA=VREF IKA(off) _ 0.05 1.0 uA VKA=36V,VREF=0 IZKAl _ 0.15 0.5 Ω VKA=VREF,IK=1~100mA, F ≤ 1KHz mV/V IK=10mA,R1=10KΩ,R2=∞ IK=10mA,R1=10KΩ,R2=∞ TA=Full Temperature Any changing of specification will not be informed individual Page 1 of 3 TL431K Elektronische Bauelemente Adjustable Shunt Regulator Functional Block Diagram & Symbol Test Circuits Characteristics Curve http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 2 of 3 TL431K Elektronische Bauelemente http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. B Adjustable Shunt Regulator Any changing of specification will not be informed individual Page 3 of 3