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FAN4800CUM Folha de dados(PDF) 8 Page - Fairchild Semiconductor

Nome de Peças FAN4800CUM
Descrição Electrónicos  PFC/ PWM Controller Combination
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN4800CUM Folha de dados(HTML) 8 Page - Fairchild Semiconductor

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© 2011 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800AU/CU • Rev. 1.0.0
8
Electrical Characteristics (Continued)
Unless otherwise noted, VDD=15V, TA= 25°C, TA=TJ, RT=6.8kΩ, and CT=1000pF.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
Voltage Error Amplifier
VREF
Reference Voltage
2.45
2.50
2.55
V
AV
Open-Loop Gain
(3)
35
42
dB
Gmv
Transconductance
VNONINV=VINV, VVEA=3.75V
50
70
90
µmho
IFBPFC-L
Maximum Source Current
VFBPFC=2V, VVEA=1.5V
40
50
µA
IFBPFC-H
Maximum Sink Current
VFBPFC=3V, VVEA=6V
-50
-40
µA
IBS
Input Bias Current
-1
1
µA
VVEA-H
Output High Voltage on VVEA
5.8
6.0
V
VVEA-L
Output Low Voltage on VVEA
0.1
0.4
V
Current Error Amplifier
GmI
Transconductance
VNONINV=VINV, VIEA=3.75V
70
88
105
µmho
VOFFSET
Input Offset voltage
VVEA=0V, IAC Open
-10
10
mV
VIEA-H
Output High Voltage
6.8
7.4
7.8
V
VIEA-L
Output Low Voltage
0.1
0.4
V
IL
Source Current
VISENSE= -0.6V, VIEA=1.5V
35
50
µA
IH
Sink Current
VISENSE= +0.6V, VIEA=4.0V
-50
-35
µA
AI
Open-Loop Gain
(3)
40
50
dB
TriFault Detect™
tFBPFC-OPEN
Time to FBPFC Open
VFBPFC=VPFC-UVP to FBPFC OPEN,
470pF from FBPFC to GND
2
4
ms
VPFC-UVP
PFC Feedback Under-Voltage
Protection
0.4
0.5
0.6
V
Gain Modulator
IAC
Input for AC Current
(3)
Multiplier Linear Range
0
65
µA
GAIN
Gain Modulator
(4)
IAC=17.67µA, VRMS=1.080V
VFBPFC=2.25V
7.94
IAC=20µA, VRMS=1.224V
VFBPFC=2.25V
7.02
IAC=25.69µA, VRMS=1.585V
VFBPFC=2.25V
4.18
IAC=51.62µA, VRMS=3.169V
VFBPFC=2.25V
1.05
IAC=62.23µA, VRMS=3.803V
VFBPFC=2.25V
0.73
BW
Bandwidth
(3)
IAC=40µA
2
kHz
VO(gm)
Output Voltage=5.7kΩ ×
(ISENSE-IOFFSET)
IAC=50µA, VRMS=1.224V
VFBPFC=2.25V
0.76
0.80
0.84
V
PFC ILIMIT Comparator
VPFC-ILIMIT
Peak Current Limit Threshold
Voltage, Cycle-by-Cycle Limit
-1.2
-1.3
-1.4
V
VPK
PFC ILIMIT-Gain Modulator
Output
IAC=17.67µA, VRMS=1.08V
VFBPFC=2.25V
400
mV
Continued on the following page…


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