FAN6755W Fairchild Semiconductor, FAN6755W Datasheet - Page 8

• Manufacturer Part Number: FAN6755W
• Description: This highly integrated PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2009 Fairchild Semiconductor Corporation
FAN6755W / FAN6755UW • Rev. 1.0.5
Electrical Characteristics
V
Feedback Input Section
Symbol
V
V
V
DD
V
V
V
FB-ZDCR -
FB-OPEN
t
V
V
FB-ZDCR
FB-OLP
D-OLP
FB-ZDC
FB-ZDC
Z
=15V, T
A
FB-G
FB-N
FB
V
A
Input Voltage to Current-Sense
Attenuation
Input Impedance
Output High Voltage
FB Open-Loop Trigger Level
Delay Time of FB Pin Open-loop
Protection
Green-Mode Entry FB Voltage
Green-Mode Ending FB Voltage
FB Threshold Voltage for Zero-Duty
Recovery
FB Threshold Voltage for Zero-Duty
ZDC Hysterisis
=25C, unless otherwise noted.
Parameter
Figure 7.
V
FB Pin Open
FB
V
=4V
Conditions
FB
8
vs. PWM Frequency
Min.
1/4.5
45.0
0.12
5.1
4.4
2.8
1.6
1.4
10
Continued on the following page…
V
FB-N
Typ.
1/4.0
62.5
0.15
5.3
4.6
3.0
1.8
1.6
15
- 0.6
Max.
1/3.5
70.0
0.19
5.5
4.8
3.2
2.0
1.8
19
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Units
V/V
ms
kΩ
V
V
V
V
V
V
V