NCP431A Просмотр технического описания (PDF) - ON Semiconductor
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NCP431A Datasheet PDF : 16 Pages
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NCP431A, SC431A, NCP431B, NCP432B Series
ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.)
NCP431AC
NCP431AI
NCP431AV/
SC431AV
Symbol
Characteristic
Min Typ Max Min Typ Max Min Typ Max Unit
Vref
DVrefT
DVref
DVAK
Reference Input Voltage
VKA = Vref, IK = 1 mA
TA = 25°C
TA = Tlow to Thigh (Note 1)
V
2.475 2.500 2.525 2.475 2.500 2.525 2.475 2.500 2.525
2.475 2.500 2.525 2.465 2.500 2.525 2.460 2.500 2.525
Reference Input Voltage Deviation Over Temperat- −
−
−
− 5.0 10
− 10 15 mV
ure Range (Figure 1, Notes 2, 3)
VKA= Vref, IK = 1 mA
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 −3.1
− −1.28 −1.9
− −2.00 −3.1
− −1.28 −1.9
mV/
V
− −2.00 −3.1
− −1.28 −1.9
Iref Reference Input Current (Figure 2)
IK = 1 mA, R1 = 220 k, R2 = R
TA = −40°C to +125°C
nA
− 81 190 − 81 190 − 81 190
DIrefT Reference Input Current Deviation Over Temperat-
ure Range (Figure 2, Note 2, 3)
− 22 55
IK = 1 mA, R1 = 10 k, R2 = R
− 22 55
nA
− 22 55
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 3)
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
1. Tlow = −40°C for NCP431AI, NCP431AV, SC431AV
= 0°C for NCP431AC
Thigh = 70°C for NCP431AC
= 85°C for NCP431AI
= 125°C for NCP431AV, SC431AV
2. Guaranteed by design
3. 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:
ǒ Ǔ DVref
ppm
Vref@25° C
Vref ° C +
DTA
106
+
DVref
106
DTAǒVref@25° CǓ
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
ppmń°
C
4. 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)).
5. SC431AVSNT1G − Tlow = −40°C, Thigh = 125°C. Guaranteed by design. SC Prefix for Automotive and Other Applications Requiring Unique
Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable.
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