Datasheet TLV431, NCV431, SCV431 (ON Semiconductor) - 4

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TLV431, NCV431, SCV431 ELECTRICAL CHARACTERISTICS
(TA = 25°C unless otherwise noted)
TLV431C Characteristic Symbol Min Typ Max Unit
Reference Voltage (Figure 3) Vref V (VKA = Vref, IK = 10 mA, TA = 25°C) 1.237 1.240 1.243 (TA = Tlow to Thigh, Note 5) 1.228 − 1.252 Reference Input Voltage Deviation Over Temperature (Figure 3) DVref mV (VKA = Vref, IK = 10 mA, TA = Tlow to Thigh, Notes 5, 6, 7) − 7.2 20 Ration of Reference Input Voltage Change to Cathode Voltage Change (Figure 4) DVref mV (VKA = Vref to 16 V, IK = 10 mA) DV − −0.6 −1.5 V KA Reference Terminal Current (Figure 4) Iref mA (IK = 10 mA, R1 = 10 kW, R2 = open) − 0.15 0.3 Reference Input Current Deviation Over Temperature (Figure 4) DIref mA (IK = 10 mA, R1 = 10 kW, R2 = open, Notes 5, 6, 7) − 0.04 0.08 Minimum Cathode Current for Regulation (Figure 3) IK(min) − 30 80 mA Off−State Cathode Current (Figure 5) IK(off) mA (VKA = 6.0 V, Vref = 0) − 0.01 0.04 (V − 0.012 0.05 KA = 16 V, Vref = 0) Dynamic Impedance (Figure 3) |ZKA| W (VKA = Vref, IK = 0.1 mA to 20 mA, f ≤ 1.0 kHz, Note 8) − 0.25 0.4 5. Ambient temperature range: Tlow = *40°C, Thigh = 85°C. 6. Guaranteed but not tested. 7. The deviation parameters DVref and DIref are defined as the difference between the maximum value and minimum value obtained over the full operating ambient temperature range that applied. Vref Max DVref = Vref Max − Vref Min Vref Min DTA = T2 − T1 T1 Ambient Temperature T2 The average temperature coefficient of the reference input voltage, aVref is defined as: ǒ (DVref) Ǔ Vref (TA+ 25°C) 106 αV ǒppmǓ ref °C + DTA aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature, refer to Figure 8. Example: DVref = 7.2 mV and the slope is positive, Example: Vref @ 25°C = 1.241 V Example: DTA = 125°C 0.0072 106 αV ǒppmǓ 1.241 ref °C + 125 + 46 ppmń°C 8. The dynamic impedance ZKA is defined as: DV ⏐Z KA KA⏐ + DIK When the device is operating with two external resistors, R1 and R2, (refer to Figure 4) the total dynamic impedance of the circuit is given by: ⏐Z Ǔ KA′⏐ + ⏐ZKA⏐ ǒ1 ) R1 R2
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