TL431A-KRA

TL431-KRA TL431A-KRA Programmable Precision Reference SOT-23 Features  Low dynamic output impedance.  Sink current capability of 1.0 to 100mA.  Low output noise voltage  Fast turn on response 1. Cathode Application  2.Reference 3.Anode Marking Code: TL431: 431 TL431A: 431A It provides very wide applications, including shunt regulator,series regulator,switching regulator,voltage reference and others. 1:Cathode (K) 2:Reference (R) 3:Anode(A) Absolute Maximum Ratings (Ta=25℃unless otherwise specified) Parameter Symbol Value Units Cathode Voltage VKA 37 V Cathode Current Range(Continuous) IKA -100 ~ +150 mA Reference Input Current Range IREF -0.05 ~ +10 mA Maximum Power Dissipation PD 350 mW Operating Junction Temperature TJ 150 °C TSTG -65 ~ +150 °C Storage Temperature Range Recommended Operating Conditions Parameter Symbol Min. Max. Units Cathode Voltage VKA VREF 36 V Cathode Current IKA 1 100 mA TOPR -25 85 °C Operating Ambient Temperature Range www.pingjingsemi.com Revision：2.0 Aug-2021 1/4 TL431-KRA TL431A-KRA Programmable Precision Reference Electrical Characteristics (Ta=25℃ unless otherwise specified) Parameter Symbol Reference Input Voltage Fig1 VREF Deviation of Reference Input Voltage Over Temperature Ratio of Change in Reference Input Voltage Fig2 Reference Input Current Fig2 Deviation of Reference Input Current Over Full Temperature Range Fig2 Unit 2.495 2.55 V IKA=10mA TL431A 2.48 2.495 2.51 V -- 4.5 17 mV ∆VKA=10V~VREF -- -1.0 -2.7 ∆VKA=36V~10V -- -0.5 -2.0 -- 1.5 4 µA -- 0.4 1.2 µA IKA=10mA, R1=10KΩ, R2=∞ IKA=10mA, R1=10KΩ, ∆IREF Max. 2.44 IKA=10mA IREF Typ. TL431 -25°C ≤TA≤+85°C ∆VREF ∆VKA Min. VKA=VREF, VKA=VREF,IKA=10mA ∆VREF Fig1 to The Change in Cathode Voltage Test Conditions R2=∞, -25°C ≤TA≤+85°C mV/V Minimum Cathode Current for Regulation Fig1 IKA(MIN) VKA=VREF -- 0.45 1 mA Off-State Cathode Current Fig3 IKA(OFF) VKA=36V, VREF=0 -- 0.05 1.0 µA -- 0.15 0.5 Ω Dynamic Impedance Figure 1. Test Circuit for VKA = VREF Input IK VKA f≤1.0KHz Figure 2. Test Circuit for VKA > VREF VKA Input R1 Vref VKA=VREF, IKA=1~ 100mA, ZKA Iref R2 Input Ioff IK V KA Figure 3. Test Circuit for IOFF VKA ǒ Ǔ + Vref 1 ) R1 ) Iref S R1 R2 Vref www.pingjingsemi.com Revision：2.0 Aug-2021 2/4 TL431-KRA TL431A-KRA Programmable Precision Reference Typical Characteristic Curves Cathode Current (μA) 75 50 25 0 -25 -50 -75 -100 Change In Reference Input Voltage (mV) 800 TA=25°C 125 V =V KA REF 100 -2 -1 0 1 2 Cathode Voltage (V) 0 -5 -15 -20 -25 -30 -35 5 10 15 20 25 30 35 40 200 0 6 2 0 1 Cathode Voltage (V) 3 TA=25°C 4 3 2 1 0 -1 -1 0 1 2 3 4 Time (µs) 5 6 7 Small-signal Voltage Amplication AV (dB) Deviation of Reference Voltage VREF (V) Temperature (℃) www.pingjingsemi.com -1 5 Cathode Voltage (V) Revision：2.0 Aug-2021 IKA(MIN ) 7 -10 -40 0 400 -200 -2 3 IKA=10mA TA=25°C TA=25°C VKA=VREF 600 Input and Output Voltage (V) Cathode Current (mA) 150 Frequency (Hz) 3/4 TL431-KRA TL431A-KRA Programmable Precision Reference Package Outline SOT-23 Dimensions in mm Ordering Information Device Package Shipping TL431-KRA,TL431A-KRA SOT-23 3,000PCS/Reel&7inches www.pingjingsemi.com Revision：2.0 Aug-2021 4/4