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SC431AVSNT1G Datasheet(PDF) 4 Page - ON Semiconductor |
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SC431AVSNT1G Datasheet(HTML) 4 Page - ON Semiconductor |
4 / 17 page NCP431A, SC431A, NCP431B, NCP432B Series http://onsemi.com 4 ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.) Symbol Characteristic NCP431BC NCP432BC NCP431BI NCP432BI NCP431BV NCP432BV Unit Min Typ Max Min Typ Max Min Typ Max Vref Reference Input Voltage VKA = Vref, IK = 1 mA TA = 25°C TA = Tlow to Thigh (Note 6) 2.4875 2.4875 2.500 2.500 2.5125 2.5125 2.4875 2.4775 2.500 2.500 2.5125 2.5125 2.4875 2.4725 2.500 2.500 2.5125 2.5125 V DVrefT Reference Input Voltage Deviation Over Tem- perature Range (Figure 1, Notes 7, 8) VKA= Vref, IK = 1 mA − − − − − − − 5.0 10 1− − − 10 15 15 mV DVref DVAK Ratio of Change in Reference Input Voltage to Change in Cathode to Anode Voltage IK = 1 mA (Figure 2), DVKA = 10 V to Vref DVKA = 36 V to 10 V − − −2.00 −1.28 −3.1 −1.9 − − −2.00 −1.28 −3.1 −1.9 − − −2.00 −1.28 −3.1 −1.9 mV/ V Iref Reference Input Current (Figure 2) IK = 1 mA, R1 = 220 k, R2 = R TA = −40°C to +125°C − 81 190 − 81 190 − 81 190 nA DIrefT Reference Input Current Deviation Over Tem- perature Range (Figure 2, Note 7, 8) IK = 1 mA, R1 = 10 k, R2 = R − 22 55 − 22 55 − 22 55 nA Imin Minimum Cathode Current For Regulation VKA = Vref (Figure 1) − 40 80 − 40 80 − 40 80 mA Ioff Off−State Cathode Current (Figure 3) VKA = 36 V, Vref = 0 V − 180 1000 − 180 1000 − 180 1000 nA |ZKA| Dynamic Impedance (Figure 1, Note 8) VKA = Vref, DIK = 1.0 mA to 100 mA f v 1.0 kHz − 0.22 0.5 − 0.22 0.5 − 0.22 0.5 W 6. Tlow = −40°C for NCP431BI, NCP431BV, NCP432BI, NCP432BV = 0°C for NCP431BC, NCP432BC Thigh = 70°C for NCP431BC, NCP432BC = 85°C for NCP431BI, NCP432BI = 125°C for NCP431BV, NCP432BV 7. Guaranteed by design 8. The deviation parameter DVrefT is defined as the difference between the maximum and minimum values obtained over the full operating ambient temperature range that applies. The average temperature coefficient of the reference input voltage, Vref is defined as: Vref ppm ° C + DVref Vref@25°C 106 DTA + DVref 106 DTA Vref@25° C aVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. Example: DVrefT = 17 mV and slope is positive Vref = 2.5 V, DTA = 165°C (from −40°C to +125°C) aVref + 0.017 @ 106 165 @ 2.5 + 41.2 ppm ° C 9. The dynamic impedance ZKA is defined as: (|ZKA| = (DVKA/DIK). When the device is programmed with two external resistors, R1 and R2, the total dynamic impedance of the circuit is defined as: |ZKA’| [ |ZKA| (1 + (R1/R2)) |
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