FAN4800AU Fairchild Semiconductor, FAN4800AU Datasheet - Page 7

• Manufacturer Part Number: FAN4800AU
• Description: The highly integrated FAN4800AU/CU parts are specially designed for power supplies that consist of boost PFC and PWM
• Manufacturer: Fairchild Semiconductor

© 2011 Fairchild Semiconductor Corporation
FAN4800AU/CU • Rev. 1.0.0
Electrical Characteristics
Unless otherwise noted, V
V
Oscillator
V
PFC OVP Comparator
Low-Power Detect Comparator
V
△V
△V
△V
DD
VREF
△V
△V
△V
Symbol
f
I
IN
△V
△V
V
t
V
VREF-MAX
OSC-RT/CT
V
V
I
PFC-DEAD
V
f
△V
I
OSC-DIS
V
RD-FBPFC
I
PFC-OVP
RANGE
OK Comparator
Section
DD-OVP
VEAOFF
DD-OP
DD-ST
f
TH-ON
RD-FBPFC
PFC-OVP
OSC
f
f
f
VREF-DT
VREF-TV
VREF-LS
f
VREF
DD-OVP
DV
RV
DT
TV
VREF1
VREF2
TH
.
Startup Current
Operating Current
Turn-on Threshold Voltage
Hysteresis
V
V
RT/CT Frequency
PFC & PWM Frequency
FAN4800CU PWM Frequency
Voltage Stability
Temperature Stability
Total Variation (PFC & PWM)
Ramp Voltage
Discharge Current
Frequency Range
PFC Dead Time
Reference Voltage
Load Regulation of Reference
Voltage
Line Regulation of Reference
Voltage
Temperature Stability
Total Variation
Long-Term Stability
Maximum Current
Over-Voltage Protection
PFC OVP Hysteresis
VEA Voltage OFF OPFC
Voltage Level on FBPFC to
Enable OPWM During Startup
Hysteresis
DD
DD
OVP
OVP Hysteresis
Parameter
DD
=15V, T
(3)
(3)
(3)
(3)
(3)
A
= 25°C, T
(3)
A
=T
V
Open
V
R
11V ≦ V
-40°C ~ +105°C
Line, Temperature
Valley to Peak
V
R
I
C
V
C
-40°C ~ +105°C
Line, Load, Temperature
T
V
VREF
J
DD
DD
RAMP
DD
VREF
T
T
VREF
VREF
J
=125°C, 0 ~ 1000 Hours
, R
=6.8kΩ, C
=6.8kΩ, C
=V
=13V, OPFC OPWM Open
=14V, Rise/Fall Time > 20µs
=0mA, C
T
=0.1µF, I
=0.1µF, V
=0V, V
> 7.35V
=6.8kΩ, and C
TH-ON
DD
7
-0.1V, OPFC OPWM
Condition
≦ 22V
T
RT/CT
T
VREF
=1000pF
=1000pF
VREF
DD
=2.5V
=0.1µF
=11V to 22V
=0mA to 3.5mA
T
=1000pF.
Continued on the following page…
Min.
7.35
2.70
240
120
400
200
2.0
1.3
6.5
7.4
0.2
2.3
1.0
10
27
60
58
50
5
5
Typ.
2.75
256
128
600
250
2.6
2.8
7.5
0.4
0.3
2.4
1.1
30
11
28
64
30
1
Max.
15.0
7.65
2.80
268
134
800
300
5.0
1.9
7.6
0.5
0.4
2.5
1.2
80
12
29
67
70
75
50
25
25
2
2
www.fairchildsemi.com
Unit
kHz
kHz
kHz
kHz
mA
mV
mV
mA
mV
mA
mV
µA
ns
%
%
%
V
V
V
V
V
V
V
V
V
V
V