参数资料
型号: FAN4800ASNY
厂商: Fairchild Semiconductor
文件页数: 9/19页
文件大小: 860K
描述: IC CTLR COMBO PFC/PWM 16-DIP
标准包装: 30
模式: 平均电流
频率 - 开关: 240kHz ~ 268kHz
电流 - 启动: 30µA
电源电压: 11 V ~ 26 V
工作温度: -40°C ~ 105°C
安装类型: 通孔
封装/外壳: 16-DIP(0.300",7.62mm)
供应商设备封装: 16-DIP
包装: 管件
 
?2010 Fairchild Semiconductor Corporation
 
www.fairchildsemi.com
FAN4800AS/CS/01S/02S " Rev. 1.0.2
9
Electrical Characteristics (Continued)
Unless otherwise noted, V
DD
=15 V, T
A
= 25癈, T
A
=T
J
, R
T
=6.8 k&, and C
T
=1000 pF.
Symbol
Parameter
Conditions
Min.    Typ.   Max.    Unit
Voltage Error Amplifier
V
REF
 
Reference Voltage
 
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
=3.75 V
50
70
90
umho
I
FBPFC-L
 
Maximum Source Current
V
FBPFC
=2 V, V
VEA
=1.5 V
40
50
 
I
FBPFC-H
 
Maximum Sink Current
V
FBPFC
=3 V, V
VEA
=6 V
 
-50
-40
I
BS
 
Input Bias Current
 
 
-1
 
1
V
VEA-H
 
Output High Voltage on V
VEA
 
 
5.8
6.0
 
V
V
VEA-L
 
Output Low Voltage on V
VEA
 
 
 
0.1
0.4
V
Current Error Amplifier
Gm
I
 
Transconductance
 
V
NONINV
=V
INV
, V
IEA
=3.75 V
78
88
100     umho
V
OFFSET
 
Input Offset Voltage
V
VEA
=0 V, 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
=-0.6 V, V
IEA
=1.5 V
35
50
 
I
H
 
Sink Current
V
ISENSE
=+0.6 V, V
IEA
=4.0 V
 
-50
-35
A
I
(3)
 
Open-Loop Gain
 
 
40
50
 
dB
TriFault Detect"
t
FBPFC_OPEN
    Time to FBPFC Open
V
FBPFC
=V
PFC-UVP
 to FBPFC OPEN,
470 pF 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
GAIN
GAIN Modulator
(4)
 
I
AC
=17.67礎, V
RMS
=1.080V
V
FBPFC
=2.25V
7.500    9.000   10.500
 
I
AC
=20.00 礎, V
RMS
=1.224 V
V
FBPFC
=2.25 V
6.367    7.004    7.704
I
AC
=25.69 礎, V
RMS
=1.585 V
V
FBPFC
=2.25 V
3.801    4.182    4.600
I
AC
=51.62 礎, V
RMS
=3.169 V
V
FBPFC
=2.25 V
0.950    1.045    1.149
I
AC
=62.23 礎, V
RMS
=3.803 V
V
FBPFC
=2.25 V
0.660    0.726    0.798
BW
Bandwidth
(3)
 
I
AC
=40 礎
 
2
 
kHz
V
O
(gm)
Output Voltage=5.7 k& ?(I
SENSE
-
I
OFFSET
)
I
AC
=20 礎, V
RMS
=1.224 V
V
FBPFC
=2.25 V
0.710    0.798    0.885
V
PFC I
LIMIT
 Comparator 
V
PFC-ILIMIT
 
Peak Current Limit Threshold
Voltage, Cycle-by-Cycle Limit
 
-1.35     -1.20     -1.05
V
PK
 
PFC I
LIMIT
-Gain Modulator Output
I
AC
=17.67 礎, V
RMS
=1.08 V
V
FBPFC
=2.25 V
200
 
 
mV
Continued on the following page&
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