NCP1236
TYPICAL PERFORMANCE CHARACTERISTICS
85
84
83
82
81
80
79
78
77
76
75
2.20
2.15
2.10
2.05
2.00
1.95
1.90
1.85
1.80
−50
−25
0
25
50
75
100
125
−50
−25
0
25
50
75
100
125
TEMPERATURE (C)
TEMPERATURE (C)
Figure 15. Maximum Duty Cycle DMAX
Figure 16. FB Pin Voltage Below Which
Frequency Foldback Starts VFB(foldS)
1.50
1.45
1.40
1.35
1.30
1.25
1.20
0.77
0.75
0.73
0.71
0.69
0.67
0.65
0.63
−50
−25
0
25
50
75
100
125
−50
−25
0
25
50
75
100
125
TEMPERATURE (C)
TEMPERATURE (C)
Figure 17. FB Pin Voltage Below Which
Frequency Foldback is Complete VFB(foldE)
Figure 18. FB Pin Skip−in Level Vskip(in)
0.88
0.86
0.84
0.82
0.80
0.78
0.76
0.74
0.72
30
29
28
27
26
25
24
23
22
21
20
−50
−25
0
25
50
75
100
125
−50
−25
0
25
50
75
100
125
TEMPERATURE (C)
TEMPERATURE (C)
Figure 20. Minimum Switching Frequency
fOSC(min)
Figure 19. FB Pin Skip−Out Level Vskip(out)
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10
ONSEMI [ ONSEMI ]
