FAN4800AU Fairchild Semiconductor, FAN4800AU Datasheet - Page 8

• 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
Unless otherwise noted, V
Voltage Error Amplifier
Current Error Amplifier
TriFault Detect™
Gain Modulator
PFC I
Electrical Characteristics
t
V
Symbol
FBPFC-OPEN
V
V
I
V
I
PFC-ILIMIT
V
FBPFC-H
V
△V
FBPFC-L
V
GAIN
V
PFC-UVP
V
Gm
OFFSET
O
Gm
BW
VEA-H
VEA-L
I
I
A
IEA-H
IEA-L
I
A
(gm)
REF
I
AC
LIMIT
BS
H
L
V
I
PK
v
I
Comparator
Reference Voltage
Open-Loop Gain
Transconductance
Maximum Source Current
Maximum Sink Current
Input Bias Current
Output High Voltage on V
Output Low Voltage on V
Transconductance
Input Offset voltage
Output High Voltage
Output Low Voltage
Source Current
Sink Current
Open-Loop Gain
Time to FBPFC Open
PFC Feedback Under-Voltage
Protection
Input for AC Current
Gain Modulator
Bandwidth
Output Voltage=5.7kΩ ×
(I
Peak Current Limit Threshold
Voltage, Cycle-by-Cycle Limit
PFC I
Output
SENSE
LIMIT
-I
OFFSET
Parameter
-Gain Modulator
(3)
DD
=15V, T
)
(4)
(3)
(3)
(3)
A
= 25°C, T
(Continued)
VEA
VEA
A
V
V
V
V
V
V
V
V
470pF from FBPFC to GND
Multiplier Linear Range
I
V
I
V
I
V
I
V
I
V
I
I
V
I
V
AC
AC
AC
AC
AC
AC
AC
AC
=T
NONINV
FBPFC
FBPFC
NONINV
VEA
ISENSE
ISENSE
FBPFC
FBPFC
FBPFC
FBPFC
FBPFC
FBPFC
FBPFC
FBPFC
=17.67µA, V
=20µA, V
=25.69µA, V
=51.62µA, V
=62.23µA, V
=40µA
=50µA, V
=17.67µA, V
J
, R
=0V, IAC Open
=2V, V
=3V, V
=V
=2.25V
=2.25V
=2.25V
=2.25V
=2.25V
=2.25V
=2.25V
= -0.6V, V
= +0.6V, V
T
=V
=V
=6.8kΩ, and C
PFC-UVP
INV
INV
8
RMS
RMS
Condition
, V
, V
VEA
VEA
RMS
RMS
RMS
RMS
RMS
VEA
IEA
=1.224V
=1.224V
=1.5V
=6V
to FBPFC OPEN,
IEA
IEA
=3.75V
=3.75V
=1.080V
=1.585V
=3.169V
=3.803V
=1.08V
=1.5V
=4.0V
T
=1000pF.
Continued on the following page…
Min.
2.45
0.76
-1.2
400
5.8
-10
6.8
0.4
35
50
40
70
35
40
-1
0
Typ.
2.50
7.94
7.02
4.18
1.05
0.73
0.80
-1.3
-50
6.0
0.1
7.4
0.1
-50
0.5
42
70
50
88
50
50
2
Max.
2.55
0.84
105
-1.4
-40
-35
0.4
7.8
0.4
0.6
90
10
65
1
4
2
www.fairchildsemi.com
µmho
µmho
Unit
kHz
mV
mV
ms
dB
µA
µA
µA
µA
µA
dB
µA
V
V
V
V
V
V
V
V