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NCP1031 Datasheet(PDF) 9 Page - ON Semiconductor

Part # NCP1031
Description  Low Power PWM Controller with On-Chip Power Switch and Startup Circuits for 48 V Telecom Systems
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1031 Datasheet(HTML) 9 Page - ON Semiconductor

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NCP1030, NCP1031
http://onsemi.com
9
TYPICAL CHARACTERISTICS
Figure 16. Line Under/Overvoltage Thresholds
vs. Junction Temperature
TJ, JUNCTION TEMPERATURE (C)
--50
--25
0
50
150
75
100
125
25
2.600
2.575
2.550
2.525
2.350
2.375
2.400
2.425
2.500
2.475
2.450
200
190
180
170
120
130
160
150
140
--25
TJ, JUNCTION TEMPERATURE (C)
--50
0
25
50
75
100
125 150
210
220
Figure 17. Line Under/Overvoltage Hysteresis
vs. Junction Temperature
Figure 18. Oscillator Frequency vs. Timing
Capacitor
Figure 19. Oscillator Frequency vs. Junction
Temperature
1000
900
800
700
0
100
200
300
600
500
400
CT, TIMING CAPACITOR (pF)
Figure 20. Maximum Duty Cycle vs. Junction
Temperature
0
200
400
600
800
1000
VCC =12 V
TJ =25C
TJ, JUNCTION TEMPERATURE (C)
Figure 21. Power Switch Circuit On Resistance
vs. Junction Temperature
VCC =12 V
1100
1000
900
800
100
200
400
700
600
500
--50 --25
0
25
150
50
75
100
125
300
CT =47 pF
CT = 220 pF
CT = 1000 pF
77.0
76.5
76.0
75.5
72.0
72.5
73.0
73.5
75.0
74.5
74.0
--50
--25
0
25
50
75
TJ, JUNCTION TEMPERATURE (C)
100
125
150
fOSC = 1000 kHz
fOSC = 200 kHz
VCC =12 V
8
7
6
0
1
2
3
5
4
--50
--25
0
25
50
75
TJ, JUNCTION TEMPERATURE (C)
100
125
150
VCC =12 V
ID = 100 mA
NCP1030
NCP1031


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