SCY99194 Datasheet, PDF (11/40 Pages) ON Semiconductor – Fixed Frequency Current Mode Controller

SCY99194
TYPICAL CHARACTERISTIC
85
84
83
82
81
80
79
78
77
76
75
−50 −25
0
25
50
75
TEMPERATURE (°C)
100 125
Figure 20. Maximum Duty Ratio D_MAX
30
29
28
27
26
25
24
23
22
−50 −25
0 25 50 75
TEMPERATURE (°C)
100 125
Figure 21. Minimum Switching Frequency
f_OSC(min)
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
TEMPERATURE (°C)
Figure 22. FB Pin Voltage Below Which
Frequency Foldback Starts V_FB(foldS)
1.00
0.98
0.96
0.94
0.92
0.90
0.88
0.86
0.84
0.82
0.80
−50
−25
0
25
50
75 100 125
TEMPERATURE (°C)
Figure 23. FB Pin Voltage Below Which
Frequency Foldback Complete V_FB(foldE)
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