HFC0400 – FIXED-FREQUENCY FLYBACK CONTROLLER WITH ULTRA-LOW NO LOAD POWER CONSUMPTION
TYPICAL CHARACTERISTICS (continued)
VCC Re-charge Level
when Protection Occurs
vs. Temperature
VCC Decreasing Level
When Latch-off Phase
Ends vs. Temperature
HV Turn-on Threshold
vs. Temperature
5.50
5.45
5.40
5.35
5.30
5.25
5.20
5.15
5.10
3.2
3.0
2.8
2.6
2.4
2.2
2.0
116
114
112
110
108
106
104
102
100
98
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
HV Turn-off Threshold
vs. Temperature
Oscillator Frequency
vs. Temperature
Frequency Jitter Amplitude,
in Percentage of f
6.52vs. Temperature
OSC
110
65.0
108
106
104
102
100
98
6.50
6.48
6.46
6.44
6.42
6.40
6.38
64.0
63.0
62.0
61.0
60.0
59.0
58.0
96
94
92
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
Minimum Switching
Frequency vs. Temperature
Slope of the Compensation
Ramp vs. Temperature
Current Limit
vs. Temperature
29.0
28.0
27.0
26.0
25.0
24.0
23.0
22.0
21.0
0.98
26.5
26.0
25.5
25.0
24.5
24.0
23.5
0.97
0.96
0.95
0.94
0.93
0.92
0.91
0.90
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
-40-25-10 5 20 35 50 65 80 95110125
HFC0400 Rev. 1.0
11/28/2012
www.MonolithicPower.com
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© 2012 MPS. All Rights Reserved.
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