SG6846A 查看數據表（PDF） - Fairchild Semiconductor
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SG6846A Datasheet PDF : 15 Pages
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Typical Performance Characteristics (Continued)
85
80
75
70
65
60
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (°C)
Figure 14. Normal PWM Frequency (fOSC)
vs. Temperature
70
56
42
28
14
0
1.6 1.7 1.8 1.9 2.0 2.1 2.2 2.3 2.4
VFB (V)
Figure 15. PWM Frequency vs. FB Voltage
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3
VIN ( V )
0.90
0.82
0.74
0.66
0.58
0.50
0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2.9 3.1 3.3
VIN (V)
Figure 16. Current-Limit Threshold vs. VIN Voltage Figure 17. 2/3 Current-Limit Threshold vs. VIN Voltage
71.0
70.5
70.0
69.5
69.0
68.5
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (℃)
Figure 18. Output Current of RT Pin (IRT)
vs. Temperature
1.4
1.2
1.0
0.8
0.6
0.4
-40 -25 -10 5 20 35 50 65 80 95 110 125
Temperature (℃)
Figure 19. FB Output High Voltage (VRTTH)
vs. Temperature
© 2008 Fairchild Semiconductor Corporation
SG6846A • Rev. 1.1.4
10
www.fairchildsemi.com
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