FAN6747 Fairchild Semiconductor, FAN6747 Datasheet - Page 6

• 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
HV Section
DD
Symbol
t
t
D_VIN-OFF
V
=15V and T
V
S-CYCLE
t
∆V
S-TIME
IN-OFF
I
IN-ON
HV
IN
Supply Current Drawn from HV
Pin
PWM Turn-Off Threshold
PWM Turn-On Threshold
Change in V
Line Voltage Sample cycle
Line Voltage Sample Period
PWM Turn-Off Debounce Time
A
=25°C, unless otherwise specified.
Parameter
IN
, V
Figure 6. Normal UVLO and Two-Step UVLO Behavior
IN-ON
- V
IN-OFF
Figure 7. Brownout Circuit
V
DC Source Series
R=200k to HV Pin
DC Source Series
R=200k to HV Pin
DC Source Series
R=200k to HV Pin
V
V
V
V
HV
FB
FB
FB
FB
=120V, V
Conditions
> V
< V
> V
< V
FB-N
FB-G
FB-N
FB-G
6
DD
=0V
Min.
1.50
104
170
450
180
92
65
6
Typ.
2.75
102
114
205
615
235
20
12
75
Max.
4.00
112
124
240
780
290
18
85
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Units
mA
ms
ms
μs
μs
V
V
V