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NCP1280 Datasheet(PDF) 10 Page - ON Semiconductor

Part # NCP1280
Description  Active Clamp Voltage Mode PWM Controller for Off-Line Applications
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1280 Datasheet(HTML) 10 Page - ON Semiconductor

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NCP1280
http://onsemi.com
10
TYPICAL CHARACTERISTICS
TJ, JUNCTION TEMPERATURE (°C)
125
100
75
50
25
0
−25
−50
4.93
4.95
4.97
4.99
5.03
TJ, JUNCTION TEMPERATURE (°C)
RD, DELAY RESISTOR (kW)
75
50
25
0
−25
−50
0
50
100
150
200
250
350
1000
800
600
400
200
0
50
75
100
125
150
225
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−25
−50
0
40
80
160
200
150
300
150
125
100
175
200
50
75
120
RD = 1 MW, LEADING
RD = 60 kW, LEADING
LEADING
TRAILING
RSRC (VEA = 0 V, VOUT = 10 V)
RSNK (VEA = 3 V, VOUT = 2 V)
VAUX = 12 V
RMDP = 100 kW
TJ = 25°C
IREF = 0 mA
IREF = 6 mA
5.01
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−25
−50
0.35
0.45
0.55
0.75
0.85
50
75
0.65
Figure 21. VEA Input Resistance versus
Junction Temperature
TJ, JUNCTION TEMPERATURE (°C)
150
100
50
0
−50
0
10
20
40
50
30
−25
125
75
25
Figure 22. PWM Comparator Lower Input
Threshold versus Junction Temperature
Figure 23. Reference Voltage versus Junction
Temperature
Figure 24. Outputs Overlap Delay versus
Junction Temperature
Figure 25. Outputs Overlap Delay versus
Delay Resistor
Figure 26. Outputs Drive Resistance Voltage
versus Junction Temperature


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