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NCP1237 Datasheet(PDF) 13 Page - ON Semiconductor

Part # NCP1237
Description  Fixed Frequency Current Mode Controller for Flyback Converters
PDF  41 Pages
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

NCP1237 Datasheet(HTML) 13 Page - ON Semiconductor

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NCP1237
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13
TYPICAL PERFORMANCE CHARACTERISTICS
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
2.42
2.44
2.46
2.48
2.50
Figure 34. Skip Thresholds vs. Junction
Temperature
Figure 35. Soft−Skip Timer Duration vs.
Junction Temperature
Figure 36. Latch OVP Threshold vs. Junction
Temperature
Figure 37. Latch OTP Threshold vs. Junction
Temperature
Figure 38. Latch OTP Current Source vs.
Junction Temperature
75
50
−25
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
70
75
80
85
95
75
50
−25
2.43
2.45
2.47
2.49
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
0.64
0.68
0.72
0.76
0.80
75
50
−25
90
0.66
0.70
0.74
0.78
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
0.74
0.76
0.78
0.80
75
50
−25
0.75
0.77
0.79
0.81
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
76
78
80
82
88
75
50
−25
84
86
TJ, JUNCTION TEMPERATURE (°C)
150
125
100
25
0
−50
46
50
54
58
66
75
50
−25
48
52
56
60
110
100
0.82
94
90
105
Vskip(in)
Vskip(out)
0.82
0.86
0.84
Figure 39. Blanking Time on OVP Detection vs.
Junction Temperature
125
115
0.83
0.84
92
62
120
96
98
64
135
130
2.52
2.54
2.51
2.53



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