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SG684965DZ Datasheet(PDF) 9 Page - Fairchild Semiconductor

Part # SG684965DZ
Description  Low-Power, Green-Mode PWM Flyback Power Controller without Secondary Feedback
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

SG684965DZ Datasheet(HTML) 9 Page - Fairchild Semiconductor

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© 2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
SG6849 Rev. 1.6.1
9
Typical Performance Characteristics (Continued)
4.0
4.2
4.4
4.6
4.8
5.0
-40
-30
-15
0
25
50
75
100
125
Temperature (°C)
0.70
0.72
0.74
0.76
0.78
0.80
-40
-25
-10
5
20
35
50
65
80
95
110 125
Temperature (°C)
Figure 13. FB Open-Loop Voltage (VFB)
vs. Temperature
Figure 14. Valley Threshold Voltage (VSTHVA)
vs. Temperature
0.00
0.10
0.20
0.30
0.40
-40 -25 -10
5
20
35
50
65
80
95
110 125
Temperature (°C)
0.0
5.0
10.0
15.0
20.0
25.0
30.0
8
8.5
9
9.5
10
VDD (V)
fOSC-G-BK
fOSC-G-OFF
Figure 15. Output Voltage Low (VGATE-L)
vs. Temperature
Figure 16. Green-Mode Burst Back and Green-Mode
Off Frequency vs. VDD
0.50
0.60
0.70
0.80
0.90
1.00
9
101112
13141516
171819
20
VDD (V)
0.90
0.95
1.00
1.05
1.10
10
15
20
25
30
35
40
Duty Cycle (%)
Figure 17. Valley Threshold Voltage (VSTHVA) vs. VDD
Figure 18. VLIMIT Ramp vs. Duty Cycle
0
20
40
60
80
100
120
26.0
26.5
27.0
27.5
28.0
28.5
29.0
29.5
30.0
VDD Zener Clamp Voltage (V)
Figure 19. VDD Zener Current vs. Zener Clamp Voltage


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