SG6846G Fairchild Semiconductor, SG6846G Datasheet - Page 8

• Manufacturer Part Number: SG6846G
• Description: A highly integrated PWM controller, SG6846G provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6846G • Rev. 1.0.2
Typical Performance Characteristics
Figure 10. OCP Threshold Voltage for Current Limit
Figure 8. Startup Current (I
2 6.0
2 2.0
1 8.0
1 4.0
1 0.0
0 .60
0 .58
0 .56
0 .54
0 .52
0 .50
1 7.0
1 6.8
1 6.6
1 6.4
1 6.2
1 6.0
6.0
Figure 6. Turn-on Threshold Voltage (V
-40
-4 0
-40
-25
(V
-25
-2 5
STH1V
-1 0
-10
-10
-
1/2
/ @
5
5
5
at V
vs. Temperature
T e m p e ra t u re (℃ )
T e m p e ra t u re (℃ )
2 0
20
20
Temperature (℃ )
T e m p e ra t u re
IN
= 1V) vs. Temperature
3 5
) s e pe atu e
3 5
35
DD-ST
5 0
50
50
6 5
) vs. Temperature
6 5
6 5
80
80
8 0
9 5
95
9 5
DD-ON
1 1 0
1 10
11 0
)
12 5
125
12 5
8
Figure 11. OCP Threshold Voltage for Current Limit
0 .50
0 .49
0 .48
0 .47
0 .46
4 .0
3 .5
3 .0
2 .5
2 .0
Figure 7. Turn-off Threshold Voltage (V
11.5
11.0
10.5
10.0
9.5
9.0
Figure 9. Operating Supply Current (I
-4 0
-40
-4 0
-2 5
(V
-25
-25
STH3V
-1 0
-10
-10
-
1/2
5
5
@VIN=3V) vs Temperature
5
at V
vs. Temperature
vs. Temperature
2 0
2 0
T e m p e ra t u re (℃ )
Temperature (℃ )
20
Temperature (℃ )
IN
= 3V) vs. Temperature
3 5
35
35
5 0
5 0
50
6 5
65
65
8 0
8 0
80
9 5
95
9 5
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DD-OP
DD-OFF
1 10
11 0
1 1 0
)
)
125
1 2 5
125