NCP1246 ONSEMI [ON Semiconductor], NCP1246 Datasheet - Page 11

• Manufacturer Part Number: NCP1246
• Description: Fixed Frequency Current Mode Controller for Flyback Converters
• Manufacturer: ONSEMI [ON Semiconductor]

12.8
12.7
12.6
12.5
12.4
12.3
12.2
12.1
12.0
11.9
70
69
68
67
66
65
64
63
62
61
60
85
84
83
82
81
80
79
78
77
76
75
ï50
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Figure 23. Maximum ON Time t
Figure 21. Oscillator f
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Figure 25. Maximum Duty Ratio D
0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
65 kHz Version
25
25
25
Version
OSC
50
50
50
for the 65 kHz
ONmax
75
75
75
TYPICAL CHARACTERISTIC
MAX
for the
100
100
100
http://onsemi.com
NCP1246
125
125
125
11
100
8.4
8.3
8.2
8.1
8.0
7.9
7.8
99
98
97
96
95
94
93
92
91
90
30
29
28
27
26
25
24
23
22
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Figure 24. Maximum ON Time t
Figure 26. Minimum Switching Frequency
Figure 22. Oscillator f
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0
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
TEMPERATURE (°C)
100 kHz Version
25
25
25
f
Version
OSC(min)
OSC
50
50
50
for the 100 kHz
ONmax
75
75
75
for the
100
100
100
125
125
125