SG6742HR_HL Fairchild Semiconductor, SG6742HR_HL Datasheet - Page 8

• 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 16. Threshold Voltage for SENSE Short-Circuit
Figure 14. FB Open-Loop Trigger Level (V
Figure 18. Over-Temperature Protection Threshold
Figure 20. V
7
6
5
4
3
28
27
26
25
24
23
-40
0.145
0.135
1.2
1.1
0.9
0.8
-40
0.15
0.14
0.13
1
-40
Protection (V
-40
Voltage (V
-30
-30
-30
-30
DD
-15
-15
-15
Over-Voltage Protection (V
-15
vs. Temperature
Temperature
0
RTTH1
0
0
S-SCP
Temperature (℃)
0
Temperature (℃)
Temperature (℃)
Temperature (℃)
25
) vs. Temperature
25
25
) vs. Temperature
25
50
50
50
50
75
75
75
75
85
85
85
85
FB-OLP
100
100
100
100
DD-OVP
125
125
125
125
) vs.
)
8
Figure 15. Delay Time of FB Pin Open-Loop Protection
Figure 19. Over-Temperature Protection Threshold
Figure 17. Output Current from RT Pin (I
62
60
58
56
54
52
50
100
0.9
0.8
0.7
0.6
0.5
-40
99
98
97
96
-40
-40
Voltage (V
-30
-30
-30
(t
-15
D-OLP
-15
-15
vs. Temperature
) vs. Temperature
RTTH2
0
0
0
Temperature (℃)
Temperature (℃)
Temperature (℃)
) vs. Temperature
25
25
25
50
50
50
75
75
75
85
85
85
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100
100
100
RT
125
)
125
125