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| FAN6861 Datasheet, PDF (9/15 Pages) Fairchild Semiconductor – Low-Cost, Highly Integrated, Green-Mode PWM Controller for Peak Power Management | |||
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Typical Performance Characteristics
VFB-N vs Temperature (â)
2.92
2.91
2.9
2.89
2.88
2.87
2.86
-40â
-30â
-15â
0â
25â 50â 75â
Temperature (â)
85â 100â 125â
Figure 11. FB Threshold Voltage For Frequency
Reduction (VFB-N) vs. Temperature
VFB-G vs Temperature (â)
2.3
2.25
2.2
2.15
2.1
2.05
2
-40â
-30â
-15â
0â 25â 50â 75â
Temperature (â)
85â 100â 125â
Figure 12. FB Voltage at fOSC-G (VFB-N) vs. Temperature
VZDC vs Temperature (â)
2
1.95
1.9
1.85
1.8
1.75
1.7
-40â
-30â
-15â
0â 25â 50â 75â
Temperature (â)
85â 100â 125â
Figure 13. FB Threshold Voltage for Zero Duty
(VFB-ZDC) vs. Temperature
VOTP1 vs Temperature (â)
1.1
1.05
1
0.95
0.9
0.85
-40â
-30â
-15â
0â
25â 50â 75â
Temperature (â)
85â 100â 125â
Figure 14. Threshold Voltage for Over-Temperature
Protection (VOTP1) vs. Temperature
VOTP2 vs Temperature (â)
0.72
0.715
0.71
0.705
0.7
0.695
0.69
-40â
-30â
-15â
0â 25â 50â 75â
Temperature (â)
85â 100â 125â
Figure 15. Second Threshold Voltage for Over-
Temperature Protection (VOPT2) vs. Temperature
IRT vs Temperature (â)
104
102
100
98
96
94
92
90
88
86
84
-40â
-30â
-15â
0â
25â
50â 75â
Temperature (â)
85â 100â 125â
Figure 16. Output Current of RT Pin (IRT)
vs. Temperature
© 2009 Fairchild Semiconductor Corporation
FAN6861 ⢠Rev. 1.0.1
9
www.fairchildsemi.com
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