FAN6747 Fairchild Semiconductor, FAN6747 Datasheet - Page 9

• Manufacturer Part Number: FAN6747
• Description: The highly integrated FAN6747 PWM controller provides several features to enhance the performance of flyback converters
• Manufacturer: Fairchild Semiconductor

© 2010 Fairchild Semiconductor Corporation
FAN6747 • Rev. 1.0.3
Electrical Characteristics
V
Current Sense Section
PWM Output Section
Over-Temperature Protection Section
t
V
t
V
D_OTP2-LATCH
DD
t
D_OTP-LATCH
Symbol
SOFT-START
OTP2-LATCH-
DCY
OTP-LATCH-
V
V
V
=15V and T
V
V
t
t
D-OCP
D-SCP
V
t
V
CLAMP
OCP-H
OCP-L
OFF
OFF
t
limit-H
I
limit-L
LEB
PD
t
t
RT
OH
OL
R
F
MAX
Delay to Output
Leading-Edge Blanking Time
Current Limit at Low Line
(V
Current Limit at High Line
(V
OCP Trigger Level at Low Line
(V
OCP Trigger Level at High Line
(V
Period During Startup
Debounce Time for Output OCP
Debounce Time for Output SCP
Maximum Duty Cycle
Output Voltage Low
Output Voltage High
Rising Time
Falling Time
Gate Output Clamping Voltage
Output Current of RT Pin
Threshold Voltage for Over-
Temperature Protection
Over-Temperature Latch-Off
Debounce
Second Threshold Voltage for
Over-Temperature Protection
Second Over-Temperature
Latch-Off Debounce
A
=25°C, unless otherwise specified.
AC-RMS
AC-RMS
AC-RMS
AC
=259V)
=86V)
=259V)
=86V)
Parameter
V
R=200kΩ to HV
V
R=200kΩ to HV
V
R=200kΩ to HV
V
R=200kΩ to HV
V
V
and V
V
V
GATE=1nF
GATE=1nF
V
V
V
V
V
Startup Time
DC
DC
DC
DC
CS
CS
DD
DD
DD
FB
FB
FB
FB
=122V, Series
=366V, Series
=122V, Series
=366V, Series
>V
>V
=15V, I
=12V, I
=22V
Conditions
> V
< V
> V
< V
DD
OCP
OCP
FB-N
FB-G
FB-N
FB-G
< V
9
O
O
DD-SCP
=50mA
=50mA
0.790
0.690
0.450
0.390
Min.
88.0
11.0
1.00
0.65
230
190
110
320
12
92
14
40
8
7
0.825
0.725
0.480
0.420
Typ.
89.5
13.5
1.05
0.70
270
215
100
185
605
65
15
95
30
16
51
8
Max.
0.860
0.760
0.510
0.450
91.0
16.0
1.10
0.75
200
310
240
108
260
890
1.5
18
18
62
9
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Units
ms
ms
ms
μA
ms
ms
ns
ns
ns
ns
µs
%
V
V
V
V
V
V
V
V
V