SG6742MR_ML Fairchild Semiconductor, SG6742MR_ML Datasheet - Page 7

• Manufacturer Part Number: SG6742MR_ML
• Description: The highly integrated SG6742ML/MR PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6742ML/MR • Rev. 1.0.4
Typical Performance Characteristics
Figure 6. Startup Current (I
Figure 10. Supply Current Drawn from HV Pin (I
Figure 12. Frequency in Normal Mode (f
Figure 8. Start Threshold Voltage (V
70
68
66
64
62
60
18
17
16
15
14
13
5
4
3
2
1
0
25
20
15
10
-40
-40
-40
5
0
-40
-30
-30
-30
-30
-15
-15
-15
-15
vs. Temperature
vs. Temperature
vs. Temperature
0
0
0
0
Temperature (℃)
Temperature (℃)
Temperature (℃)
Temperature (℃)
25
25
25
25
DD-ST
50
50
50
50
) vs. Temperature
75
75
75
75
85
85
85
85
DD-ON
100
100
100
100
OSC
)
125
125
125
125
)
HV
)
7
Figure 11. HV Pin Leakage Current After Startup
Figure 9. Minimum Operating Voltage (V
Figure 7. Operation Supply Current (I
10
70
68
66
64
62
60
5
4
3
2
1
0
12
11
10
Figure 13. Maximum Duty Cycle (DCY
8
6
4
2
0
-40
9
8
7
-40
-40
-40
-30
-30
-30
-30
(I
-15
-15
-15
-15
HV-LC
vs. Temperature
vs. Temperature
vs. Temperature
) vs. Temperature
0
0
0
0
Temperature (℃)
Temperature (℃)
Temperature (℃)
Temperature (℃)
25
25
25
25
50
50
50
50
75
75
75
75
85
85
85
85
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100
DD-OP
100
100
100
MAX
DD-OFF
)
125
)
125
125
125
)