FAN6754 Fairchild Semiconductor, FAN6754 Datasheet - Page 7

• Manufacturer Part Number: FAN6754
• Description: The highly integrated FAN6754 PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN6754 • Rev. 1.0.2
Electrical Characteristics
V
Current-Sense Section
GATE Section
RT Section
Symbol
DCY
DD
V
V
V
V
V
t
t
V
V
CLAMP
D-OTP1
D-OTP2
GATE-H
GATE-L
R
t
RTTH1
RTTH2
Limit-L
Limit-H
GATE-
=15V and T
t
t
LEB
PD
SS
t
t
RT
r
f
MAX
Delay to Output
Leading Edge Blanking Time
Current Limit at Low Line (V
Current Limit at High Line (V
Period During Soft-Start Time
Maximum Duty Cycle
Gate Low Voltage
Gate High Voltage
Gate Rising Time
Gate Falling Time
Gate Output Clamping Voltage
Internal Resistor from RT Pin
Over-Temperature Protection Threshold
Voltage
Over-Temperature Latch-Off Debounce
A
=25°C unless otherwise noted.
Parameter
(Continued)
AC
AC
=86V)
=259V)
V
to HV
V
to HV
Startup Time
V
V
V
V
V
0.7V ＜ V
12ms Latch Off
V
Latch Off
V
FB > V
V
FB < V
V
V
DC
DC
DD
DD
DD
DD
DD
RT
RTTH2
RTTH2
RT
RT
< V
< V
7
=122V, Series R=200kΩ
=366V, Series R=200kΩ
=15V, I
=12V, I
=15V, C
=15V, C
=22V
＜ 0.7V, After 100µs
＜ V
FB-N
＜ V
FB-G
RTTH2
RTTH2
Conditions
RT
O
O
RT
RT
, FB > V
, FB < V
L
L
=50mA
=50mA
＜ 1.05V, after
=1nF
=1nF
＜ V
＜ V
RTTH1
RTTH1
FB-N
FB-G
1.000
Min.
0.43
0.36
9.50
0.65
230
110
320
86
14
40
7
8
9
10.55
1.035
Typ.
0.46
0.39
0.70
100
280
100
185
605
89
50
13
16
51
8
Max. Units
11.60
1.070
0.49
0.42
0.75
250
330
260
890
1.5
92
17
18
62
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9
KΩ
ms
ms
ns
ns
ns
ns
µs
%
V
V
V
V
V
V
V