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KA78XX Datenblatt(PDF) 7 Page - Fairchild Semiconductor

Teilenummer KA78XX
Bauteilbeschribung  3-Terminal 1A Positive Voltage Regulator
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Hersteller  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KA78XX Datenblatt(HTML) 7 Page - Fairchild Semiconductor

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KA78XX/KA78XXA
7
Electrical Characteristics (KA7812/KA7812R)
(Refer to test circuit ,0°C < TJ < 125°C, IO = 500mA, VI =19V, 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
KA7812/KA7812R
Unit
Min. Typ.
Max.
Output Voltage
VO
TJ =+25
oC
11.5
12
12.5
5.0mA
≤ IO≤1.0A, PO≤15W
VI = 14.5V to 27V
11.4
12
12.6
V
Line Regulation (Note1)
Regline
TJ =+25
oC
VI = 14.5V to 30V
-
10
240
mV
VI = 16V to 22V
-
3.0
120
Load Regulation (Note1)
Regload
TJ =+25
oC
IO = 5mA to 1.5A
-
11
240
mV
IO = 250mA to 750mA
-
5.0
120
Quiescent Current
IQ
TJ =+25
oC-
5.1
8.0
mA
Quiescent Current Change
∆IQ
IO = 5mA to 1.0A
-
0.1
0.5
mA
VI = 14.5V to 30V
-
0.5
1.0
Output Voltage Drift
∆VO/∆TIO = 5mA
-
-1
-
mV/ oC
Output Noise Voltage
VN
f = 10Hz to 100KHz, TA =+25
oC-
76
-
µV/Vo
Ripple Rejection
RR
f = 120Hz
VI = 15V to 25V
55
71
-
dB
Dropout Voltage
VDrop
IO = 1A, TJ=+25
oC-
2
-
V
Output Resistance
rO
f = 1KHz
-
18
-
m
Short Circuit Current
ISC
VI = 35V, TA=+25
oC
-
230
-
mA
Peak Current
IPK
TJ = +25
oC-
2.2
-
A


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