NCP431A データシートの表示（PDF） - ON Semiconductor
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NCP431A Datasheet PDF : 16 Pages
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NCP431A, SC431A, NCP431B, NCP432B Series
Input
Vref
V KA
Input
IK
R1
Iref
R2
Vref
VKA
Input
IK
ǒ ǓR1
VKA
+ Vref
1)
R2
) Iref @ R1
V KA
Ioff
Figure 3. Test Circuit for VKA = Vref
Figure 4. Test Circuit for VKA > Vref Figure 5. Test Circuit for Ioff
150.0
Input
100.0
VKA = Vref
TA = 25°C
VKA
IK
50.0
0.0
−50.0
60.0
40.0
20.0
Input
VKA = Vref
TA = 25°C
VKA
IK
0.0
−20.0
−40.0
IMin
−100.0
−1.0
0.0
1.0
2.0
3.0
VKA, CATHODE VOLTAGE (V)
Figure 6. Cathode Current versus Cathode
Voltage
−60.0
−1.0
0.0
1.0
2.0
3.0
VKA, CATHODE VOLTAGE (V)
Figure 7. Cathode Current versus Cathode
Voltage
2540
Input
2530
2520
Vref
2510
VKA
IK
VKA = Vref
IK = 1 mA
2500
2490
2480
2470
2460
−50 −25 0
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 8. Reference Input Voltage versus
Ambient temperature
120
110
100
90
Input IK = 1 mA VKA
220k
IK
Iref
80
70
60
50
40
−50 −25 0
25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 9. Reference Input Current versus
Ambient temperature
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