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FAN4800IN Folha de dados(PDF) 5 Page - Fairchild Semiconductor

Nome de Peças FAN4800IN
Descrição Electrónicos  Low Start-Up Current PFC/PWM Controller Combos
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Fabricante Electrônico  FAIRCHILD [Fairchild Semiconductor]
Página de início  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FAN4800IN Folha de dados(HTML) 5 Page - Fairchild Semiconductor

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© 2005 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FAN4800 Rev. 1.0.5
5
Electrical Characteristics
Unless otherwise stated, these specifications apply: VCC = 15V, RT = 52.3KΩ, CT = 470pF, TA = -40°C to 125°C.
Symbol
Parameter
Condition
Min.
Typ.
Max.
Unit
VOLTAGE ERROR AMPLIFIER
VFB
Input Voltage Range(1)
0
6
V
gm1
Transconductance
50
70
90
µmho
Vref(PFC)
Feedback Reference Voltage
TA = 25°C
2.45
2.50
2.55
V
Ib(VEAO)
Input Bias Current(2)
-1.00
-0.05
mA
VEAO(H)
Output High-Voltage
5.8
6.0
V
VEAO(L)
Output Low-Voltage
0.1
0.4
V
Isink(V)
Sink Current
TA = 25°C, VFB = 3V
VEAO = 6.0V
-35
-20
µA
Isource(V)
Source Current
TA = 25°C, VFB = 1.5V
VEAO = 1.5V
30
40
µA
GV
Open Loop Gain(1)(3)
50
60
dB
PSRR1
Power Supply Rejection Ratio(1)
11V < VCC < 16.5V
50
60
dB
CURRENT ERROR AMPLIFIER
VIEAO
Input Voltage Range(1)
-1.5
0.7
V
gm2
Transconductance
50
85
100
µmho
Voffset
Input Offset Voltage
TA = 25°C
25
mV
Ibeao
Input Bias Current(1)
-1
µA
IEAO(H)
Output High-Voltage
4.00
4.25
V
IEAO(L)
Output Low-Voltage
1.0
1.2
V
Isink(I)
Sink Current
ISENSE = +0.5, IEAO = 4.0V
-65
-35
µA
Isource(I)
Source Current
ISENSE = -0.5, IEAO = 1.5V
35
75
µA
Gi
Open Loop Gain(1)
60
70
dB
PSRR2
Power Supply Rejection Ratio(1)
11V < VCC < 16.5V
60
75
dB
PFC OVP COMPARATOR
Vovp
Threshold Voltage
TA = 25°C
2.70
2.78
2.90
V
HY(ovp)
Hysteresis
TA = 25°C
230
350
mV
LOW-POWER DETECT COMPARATOR
Vth(lp)
Threshold Voltage
TA = 25°C
0.15
0.30
0.40
V
VCC OVP COMPARATOR
VCC_OVP
Threshold Voltage
TA = 25°C
17.5
17.9
18.5
V
HY(VCC_OVP) Hysteresis
TA = 25°C
1.40
1.50
1.65
V
TRI-FAULT DETECT
td(F)
Time to Fault Detect HIGH(1)
VFB = VFault Detect LOW to
VFB = Open. 470pF from VFB
to GND
2
4
ms
F(L)
Fault Detect LOW
0.4
0.5
0.6
V


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