SG6846A Fairchild Semiconductor, SG6846A Datasheet - Page 9

• Manufacturer Part Number: SG6846A
• Description: The highly integrated SG6846A series of PWM controllers provides features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6846A • Rev. 1.1.5
Typical Performance Characteristics
Figure 12. PWM Turn-off Threshold Voltage (V
Figure 10. Startup Current (I
Figure 8. Turn-on Threshold Voltage (V
2.5
2.0
1.5
1.0
0.5
0.0
30.0
26.8
23.6
20.4
17.2
14.0
20
18
16
14
12
10
-40 -24 -7
-40 -25 -10
-40 -25 -10
Temperature (℃)
10 26 43 59 76 92 109 125
5
vs. Temperature
vs. Temperature
Temperature (℃)
5
Temperature (℃)
20
20 35 50 65 80 95 110 125
35
DD-ST
50
) vs. Temperature
65
80
95 110 125
DD-ON
IN-OFF
)
)
9
Figure 13. PWM Turn-on Threshold Voltage (V
Figure 9. Turn-off Threshold Voltage (V
1.00
0.98
0.96
0.94
0.92
0.90
10
11.5
11.1
10.7
10.3
Figure 11. Startup Current vs. V
8
6
4
2
0
9.9
9.5
10
-40 -25 -10 5 20 35 50 65 80 95 11
-40 -25 -10
11
vs. Temperature
Temperature ( ℃ )
vs. Temperature
5
Temperature (℃)
12
20
VDD (V)
35
13
50
65
14
DD
80
Voltage
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95 110 125
15
DD-OFF
0
IN-ON
12
)
5
16
)