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KA7809A Datasheet(PDF) 9 Page - Fairchild Semiconductor

Part # KA7809A
Description  3-Terminal 1A Positive Voltage Regulator
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA7809A Datasheet(HTML) 9 Page - Fairchild Semiconductor

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KA78XX/KA78XXA
9
Electrical Characteristics (KA7818)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =27V, CI= 0.33
µF, CO=0.1µF, unless otherwise specified)
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
Parameter
Symbol
Conditions
KA7818
Unit
Min.
Typ. Max.
Output Voltage
VO
TJ =+25
oC
17.3
18
18.7
5.0mA
≤ IO ≤1.0A, PO ≤15W
VI = 21V to 33V
17.1
18
18.9
V
Line Regulation (Note1)
Regline
TJ =+25
oC
VI = 21V to 33V
-
15
360
mV
VI = 24V to 30V
-
5
180
Load Regulation (Note1)
Regload
TJ =+25
oC
IO = 5mA to 1.5A
-
15
360
mV
IO = 250mA to 750mA
-
5.0
180
Quiescent Current
IQ
TJ =+25
oC-
5.2
8.0
mA
Quiescent Current Change
∆IQ
IO = 5mA to 1.0A
-
-
0.5
mA
VI = 21V to 33V
-
-
1
Output Voltage Drift
∆VO/∆TIO = 5mA
-
-1
-
mV/ oC
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA =+25
oC-
110
-
µV/Vo
Ripple Rejection
RR
f = 120Hz
VI = 22V to 32V
53
69
-
dB
Dropout Voltage
VDrop
IO = 1A, TJ=+25
oC
-
2
-
V
Output Resistance
rO
f = 1KHz
-
22
-
m
Short Circuit Current
ISC
VI = 35V, TA=+25
oC
-
250
-
mA
Peak Current
IPK
TJ =+25
oC-
2.2
-
A


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