FAN6755W Fairchild Semiconductor, FAN6755W Datasheet - Page 7

• 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
Oscillator Section
V
Current-Sense Section
Electrical Characteristics
V
Symbol
V
t
V
V
VIN-Protect
V
V
DD
V
IN
V
f
IN-Protect
TH-P
TH-P
OSC-G
f
IN
IN
t
IN-OFF
t
OSC
HOP
f
f
IN-ON
t
t
=15V, T
LEB
Section
DV
DT
PD
SS
=1V
=3V
at
at
Frequency in Normal Mode
A
Green-Mode Frequency
Hopping Period
Frequency Variation vs. V
Deviation
Frequency Variation vs.
Temperature Deviation
PWM Turn-Off Threshold Voltage
PWM Turn-On Threshold Voltage
PWM Protect Threshold Voltage
PWM Protect Debounce Time
Threshold Voltage for Current Limit
Threshold Voltage for Current Limit
Delay to Output
Leading-Edge Blanking Time
Period During Soft-Start Time
=25C, unless otherwise noted.
Parameter
DD
Figure 6.
Center
Frequency
Hopping
Range
V
T
V
V
Soft-Start (FAN6755UW)
Steady State
Startup Time
A
DD
IN
IN
=-40 to 85C=T
=1V
=3V
=11V to 22V
Conditions
7
V
IN
FAN6755W
FAN6755UW
FAN6755W
FAN6755UW
vs. V
J
SENSE
V
10.00
Min.
IN-OFF
±4.5
0.66
0.17
0.80
0.67
124
125
240
5.1
4.0
62
±9
20
60
Continued on the following page…
+
V
±10.4
12.00
Typ.
IN-OFF
±5.2
0.70
0.20
0.83
0.70
130
100
100
150
290
5.3
5.5
65
23
+
V
Max.
±11.8
14.00
IN-OFF
±5.9
0.74
0.23
0.86
0.73
136
140
200
175
340
5.5
7.0
68
26
5
5
www.fairchildsemi.com
+
Units
KHz
KHz
ms
ms
ns
ns
%
%
µs
V
V
V
V
V