SG6846C Fairchild Semiconductor, SG6846C Datasheet - Page 8

• Manufacturer Part Number: SG6846C
• Description: The highly integrated PWM controller, SG6846C provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2007 Fairchild Semiconductor Corporation
SG6846C • Rev. 1.1.2
Typical Performance Characteristics
Figure 10. OCP Threshold Voltage for Current Limit
Figure 8. Start-up Current (I
26.0
22.0
18.0
14.0
10.0
17.0
16.8
16.6
16.4
16.2
16.0
6.0
0.60
0.58
0.56
0.54
0.52
0.50
Figure 6. Turn-on Threshold Voltage (V
-40
-40
-40
-25
(V
-25
OCP Threshold Voltage for Current Limit (VSTH1V-
-25
S t a rt -Up Curre nt (I
STH1V
T urn-o n T hres hold V ol t age (V
-10
-10
-10
-
1/2
1/2@ VIN=1V) vs Temperature
5
5
5
at V
vs. Temperature
T em pera t ure (℃ )
20
T em perat ure (℃ )
20
20
Temperature (℃ )
T em perat ure
IN
= 1V) vs. Temperature
35
35
35
D D - S T
50
DD-ST
50
50
) v s T e m p erat ure
65
65
) vs. Temperature
65
D D - O N
80
80
80
) v s
95
95
95
DD-ON
110
110
110
)
125
125
125
8
Figure 11. OCP Threshold Voltage for Current Limit
4.0
3.5
3.0
2.5
2.0
0.50
0.49
0.48
0.47
0.46
11.5
11.0
10.5
10.0
Figure 7. Turn-off Threshold Voltage (V
9.5
9.0
Figure 9. Operating Supply Current (I
-40
-40
-40
OCP Threshold Voltage for Current Limit (VSTH3V-1/2-
T urn-of f V ol t age (V
-25
(V
-25
-25
Operating Supply Current (IDD-op) vs Tem perature
STH3V
-10
-10
-10
-
1/2
5
5
5
@VIN=3V) vs Temperature
at V
vs. Temperature
vs. Temperature
20
T em perat ure (℃ )
Temperature (℃ )
20
20
Temperature (℃ )
IN
= 3V) vs. Temperature
35
D D - O F F
35
35
50
50
50
) v s T em perat ure
65
65
65
80
80
80
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95
95
95
DD-OP
DD-OFF
110
110
110
)
)
125
125
125