FAN8903 查看數據表（PDF） - Fairchild Semiconductor
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FAN8903 Datasheet PDF : 16 Pages
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FAN8903(KA3903)
Absolute Maximum Rating
Parameter
Supply voltage 1
Supply voltage 2: reverse bias
Output current
Power dissipation
Operating ambient temperature
Storage temperature
Symbol
VCC1
VCC2
IO
PD
TOPR
TSTG
Value
17
−0.7
400
1.0
−40 ~ +90
−60 ~ +150
Electrical Characteristics
(VCC=12V, Ta=25°C, unless otherwise specified)
Parameter
Symbol
Conditions
UNDER VOLTAGE LOCK SECTION
Start-up threshold voltage
VST
-
UVLO hysteresis
VHYS
-
Supply zener voltage
VZ
ICC=20mA
OPERATING RANGE SECTION
Operating supply voltage
VCC VREF=5V
Operating supply current (Off)
ICC1 VSTART=Open
Operating supply current (On)
ICC2 VSTART=12V
REFERENCE SECTION
Reference voltage
VREF
-
Line regulation
REG, II 8V < VCC < 17V
Load regulation
REG, IO 0mA < IREF < 2mA
COMPARTOR SECTION (UP/DOWN/FG BLOCK)
Input resistance
RIN
VUP, VDOWN, VFC=0V
Comparing reference voltage 1 VTH1 Vout on / off S/W Vtg
COMPARATOR SECTION (CT BLOCK)
Comparing reference voltage 2 VTH2 4.2V < VCT < 4.6V
OUTPUT SECTION
Output saturation voltage
VSAT IO=0.2A
Sustain voltage
VSUS IO=20mA
OP AMP SECTION
AMP reference voltage
VAMP VCS=Vouta
Output voltage range
VOUTH IO=−10µA
VOUT1 IO=+10µA
Min.
8.3
1.1
17.2
8.0
-
-
4.8
-
-
20
3.0
4.2
-
17.2
0.23
4.0
-
Typ.
8.8
1.25
18.6
-
150
5.0
5.0
1
1
28
3.2
4.4
1.0
18.6
0.25
4.2
0.05
Unit
V
V
mA
W
°C
°C
Max.
Units
9.3
V
1.6
V
20.0
V
17.0
V
200
µA
6.0
mA
5.2
V
2
mV / V
4
mV / mA
36
kΩ
3.4
V
4.6
V
1.2
V
20.0
V
0.27
V
-
V
0.1
V
4
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