?2008 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800A/C, FAN4801/02/02L " Rev. 1.0.3
10
Electrical Characteristics (Continued)
V
DD
=15V, T
A
=25癈, R
T
=6.8k&, C
T
=1000pF unless noted operating specifications.
Symbol
Parameter
Conditions
Min. Typ. Max. Units
Voltage Error Amplifier
FBPFC
Input Voltage Range
(3)
0
6
V
V
ref
Reference Voltage
at T=25癈
2.45
2.50
2.55
V
A
V
Open-Loop Gain
(3)
35
42
dB
Gm
v
Transconductance
V
NONINV
=V
INV
, V
VEA
=3.75V at T=25癈
50
70
90
祄ho
I
FBPFC-L
Maximum Source Current V
FBPFC
=2V, V
VEA
=1.5V
40
50
礎
I
FBPFC-H
Maximum Sink Current
V
FBPFC
=3V, V
VEA
=6V
-50
-40
礎
I
BS
Input Bias Current
-1
1
礎
V
VEA-H
Output High Voltage on
V
VEA
5.8
6
V
V
VEA-L
Output Low Voltage on
V
VEA
0.1
0.4
V
Current Error Amplifier
V
ISENSE
Input Voltage Range
(ISENSE Pin)
(3)
-1.5
0.7
V
Gm
I
Transconductance
V
NONINV
=V
INV
, V
IEA
=3.75V
78
88
100 祄ho
V
OFFSET
Input Offset Voltage
V
VEA
=0V, IAC Open
-10
10
mV
V
IEA-H
Output High Voltage
6.8
7.4
8.0
V
V
IEA-L
Output Low Voltage
0.1
0.4
V
I
L
Source Current
V
ISENSE
=-0.6V, V
IEA
=1.5V
35
50
礎
I
H
Sink Current
V
ISENSE
=+0.6V, V
IEA
=4.0V
-50
-35
礎
A
I
Open-Loop Gain
(3)
40
50
dB
Tri-Fault Detect
t
FBPFC_OPEN
Time to FBPFC Open
(3)
V
FBPFC
=V
PFC-UVP
to FBPFC OPEN,
470pF from FBPFC to GND
2
4
ms
V
PFC-UVP
PFC Feedback Under-
Voltage Protection
0.4
0.5
0.6
V
Gain Modulator
I
AC
Input for AC Current
(3)
Multiplier Linear Range
0
100
礎
GAIN
GAIN Modulator
(4)
I
AC
=17.67礎, V
RMS
=1.080V
V
FBPFC
=2.25V, at T=25癈
7.50
9.00 10.50
I
AC
=20礎, V
RMS
=1.224V V
FBPFC
=2.25V,
at T=25癈
6.30
7.00
7.70
I
AC
=25.69礎, V
RMS
=1.585V
V
FBPFC
=2.25V, at T=25癈
3.80
4.20
4.60
I
AC
=51.62礎, V
RMS
=3.169V
V
FBPFC
=2.25V, at T=25癈
0.95
1.05
1.16
I
AC
=62.23礎, V
RMS
=3.803V
V
FBPFC
=2.25V, at T=25癈
0.66
0.73
0.80
BW
Bandwidth
(3)
I
AC
=40礎
2
kHz
V
o(gm)
Output Voltage=5.7k& ?
(I
SENSE
-I
OFFSET
)
(3)
I
AC
=20礎, V
RMS
=1.224V V
FBPFC
=2.25V,
at T=25癈
0.74
0.82
0.90
V
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