FAN6754B Fairchild Semiconductor, FAN6754B Datasheet - Page 8

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FAN6754B

Manufacturer Part Number
FAN6754B
Description
The highly integrated FAN6754A PWM controller provides several features to enhance the performance of flyback converters
Manufacturer
Fairchild Semiconductor
Datasheet
© 2011 Fairchild Semiconductor Corporation
FAN6754B • Rev.1.0.0
Electrical Characteristics
V
Current-Sense Section
GATE Section
RT Section
Note:
4.
Symbol
I
DCY
GATE-SINK
DD
V
V
V
SOURCE
V
V
V
V
t
t
I
CLAMP
D-OTP1
D-OTP2
GATE-L
GATE-H
GATE-
t
Limit-H
GATE-
RTTH1
RTTH2
=15V and T
Limit-L
t
t
I
LEB
PD
SS
RT
t
Guaranteed by design.
t
r
f
MAX
Delay to Output
Leading-Edge Blanking Time
Current Limit at Low Line (V
Current Limit at High Line (V
Soft-Start Time
Maximum Duty Cycle
Gate Low Voltage
Gate High Voltage
Gate Sink Current
Gate Source Current
Gate Rising Time
Gate Falling Time
Gate Output Clamping Voltage
Output Current from RT Pin
Over-Temperature Protection Threshold
Voltage
Over-Temperature Latch-Off Debounce
A
=25C unless otherwise noted.
Parameter
(4)
(4)
(Continued)
AC
AC
=86V)
=259V)
V
to HV
V
to HV
Startup Time
V
V
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
DD
DD
RT
RTTH2
RTTH2
RT
RT
< V
< V
8
=122V, Series R=200k
=366V, Series R=200kΩ
=15V, I
=12V, I
=15V
=15V, GATE=6V
=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
0.65
230
300
250
110
320
86
92
13
40
7
8
9
1.035
Typ.
0.46
0.39
0.70
100
280
100
100
185
605
89
50
13
16
51
8
1.070
Max. Units
0.49
0.42
0.75
250
330
108
260
890
1.5
www.fairchildsemi.com
92
17
19
62
9
mA
mA
ms
µA
ms
ns
ns
ns
ns
µs
%
V
V
V
V
V
V