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FAN4800IN_G View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
FAN4800IN_G
Fairchild
Fairchild Semiconductor Fairchild
FAN4800IN_G Datasheet PDF : 20 Pages
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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)
gm1 Transconductance
0
6
V
50 70 90 µmho
Vref(PFC)
Ib(VEAO)
VEAO(H)
VEAO(L)
Feedback Reference Voltage
Input Bias Current(2)
Output High-Voltage
Output Low-Voltage
Isink(V) Sink Current
Isource(V) Source Current
GV
PSRR1
Open Loop Gain(1)(3)
Power Supply Rejection Ratio(1)
CURRENT ERROR AMPLIFIER
VIEAO Input Voltage Range(1)
gm2 Transconductance
TA = 25°C
TA = 25°C, VFB = 3V
VEAO = 6.0V
TA = 25°C, VFB = 1.5V
VEAO = 1.5V
11V < VCC < 16.5V
2.45 2.50 2.55 V
-1.00 -0.05
mA
5.8 6.0
V
0.1 0.4 V
-35 -20 µA
30 40
µA
50 60
dB
50 60
dB
-1.5
0.7 V
50 85 100 µmho
Voffset
Ibeao
IEAO(H)
IEAO(L)
Isink(I)
Isource(I)
Gi
PSRR2
Input Offset Voltage
Input Bias Current(1)
Output High-Voltage
Output Low-Voltage
Sink Current
Source Current
Open Loop Gain(1)
Power Supply Rejection Ratio(1)
PFC OVP COMPARATOR
TA = 25°C
ISENSE = +0.5, IEAO = 4.0V
ISENSE = -0.5, IEAO = 1.5V
11V < VCC < 16.5V
25 mV
-1
µA
4.00 4.25
V
1.0 1.2 V
-65 -35 µA
35 75
µA
60 70
dB
60 75
dB
Vovp Threshold Voltage
HY(ovp) Hysteresis
LOW-POWER DETECT COMPARATOR
TA = 25°C
TA = 25°C
2.70 2.78 2.90 V
230
350 mV
Vth(lp) Threshold Voltage
VCC OVP COMPARATOR
TA = 25°C
0.15 0.30 0.40 V
VCC_OVP Threshold Voltage
HY(VCC_OVP) Hysteresis
TRI-FAULT DETECT
TA = 25°C
TA = 25°C
17.5 17.9 18.5 V
1.40 1.50 1.65 V
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
© 2005 Fairchild Semiconductor Corporation
FAN4800 Rev. 1.0.5
5
www.fairchildsemi.com
 

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