Datasheet NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B (ON Semiconductor) - 6

NCP431A, SC431A, NCP431B, SC431B, NCP432B, SC432B Series
2540 120 Input VKA VKA = Vref I Input K = 1 mA VKA 2530 IK = 1 mA 110 IK TAGE (mV) I 2520 100 220k K Iref Vref 2510 90 2500 80 2490 70 2480 60 2470 50 , REFERENCE INPUT VOL , REFERENCE INPUT CURRENT (nA) V ref 2460 I ref 40 −50 −25 0 25 50 75 100 125 −50 −25 0 25 50 75 100 125 TA, AMBIENT TEMPERATURE (°C) TA, AMBIENT TEMPERATURE (°C)
Figure 9. Reference Input Voltage versus Figure 10. Reference Input Current versus Ambient temperature Ambient temperature
0 100 Input V V KA KA = 36V Vref = 0V Input V I KA K R1 Ioff −10 TAGE (mV) R2 Vref −20 10 THODE CURRENT (nA) −30 ATE CA VKA = Vref −ST I , REFERENCE INPUT VOL K = 1 mA −40 1 V ref , OFF f D 0 10 20 30 40 I of −50 −25 0 25 50 75 100 125 VKA, CATHODE VOLTAGE (V) TA, AMBIENT TEMPERATURE (°C)
Figure 11. Change in Reference Input Voltage Figure 12. Off−State Cathode Current versus versus Cathode Voltage Ambient Temperature
10 0.320 1.0k ) Output ) W W IK 0.300 50 GND 0.280 1 0.260 VKA = Vref DIK = 1.0 mA to 100mA f<1.0 kHz 0.240 Output 1.0k IK |, DYNAMIC IMPEDANCE ( DI 50 K = 1 mA to 100 mA |, DYNAMIC IMPEDANCE ( 0.220 KA KA |Z TA = 25°C |Z GND 0.1 0.200 0.001 0.01 0.1 1 10 100 −50 −25 0 25 50 75 100 125 f, FREQUENCY (MHz) TA, AMBIENT TEMPERATURE (°C)
Figure 13. Dynamic Impedance versus Figure 14. Dynamic Impedance versus Ambient Frequency Temperature www.onsemi.com 6