SG6742HR_HL Fairchild Semiconductor, SG6742HR_HL Datasheet - Page 7

• Manufacturer Part Number: SG6742HR_HL
• Description: The highly integrated SG6742HL/HR PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
SG6742HL/HR • 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
18
17
16
15
14
13
5
4
3
2
1
0
105
103
101
25
20
15
10
-40
99
97
95
5
0
-40
-40
-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
5
4
3
2
1
0
12
11
10
10
70
68
66
64
62
60
Figure 13. Maximum Duty Cycle (DCY
-40
9
8
7
8
6
4
2
0
-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
)