NCP1236
www.onsemi.com
10
TYPICAL PERFORMANCE CHARACTERISTICS
75
76
77
78
79
80
81
82
83
84
−50 −25 0 25 50 75 100 125
TEMPERATURE (°C)
MAX
Figure 15. Maximum Duty Cycle D
MAX
1.80
1.85
1.90
1.95
2.00
2.05
2.10
2.15
−50 −25 0 25 50 75 100 1
V
FB(foldS)
(V)
TEMPERATURE (°C)
Figure 16. FB Pin Voltage Below Which
Frequency Foldback Starts V
FB(foldS)
1.20
1.25
1.30
1.35
1.40
1.45
1.50
−50 −25 0 25 50 75 100 125
TEMPERATURE (°C)
FB(foldE)
Figure 17. FB Pin Voltage Below Which
Frequency Foldback is Complete V
FB(foldE)
0.63
0.65
0.67
0.69
0.71
0.73
0.75
0.77
−50 −25 0 25 50 75 100 1
V
skip(in)
(V)
TEMPERATURE (°C)
Figure 18. FB Pin Skip−in Level V
skip(in)
0.72
0.74
0.76
0.78
0.80
0.82
0.84
0.86
0.88
−50 −25 0 25 50 75 100 125
TEMPERATURE (°C)
skip(out)
Figure 19. FB Pin Skip−Out Level V
skip(out)
20
21
22
23
24
25
26
27
28
29
30
−50 −25 0 25 50 75 100 1
f
OSC(min)
(kHz)
TEMPERATURE (°C)
Figure 20. Minimum Switching Frequency
f
