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KA78XXAE Scheda tecnica(PDF) 8 Page - Fairchild Semiconductor

Il numero della parte KA78XXAE
Spiegazioni elettronici  3-Terminal 1A Positive Voltage Regulator
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Produttore elettronici  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

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KA78XXE/KA78XXAE Rev. 1.0.
2
Electrical Characteristics (KA7812E/KA7812ER) (Continued)
Refer to test circuit, 0°C < TJ < 125°C, IO = 500mA, VI = 19V, CI = 0.33µF, CO = 0.1µF, unless otherwise specified.
Notes:
11. 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.
12. These parameters, although guaranteed, are not 100% tested in production.
Symbol
Parameter
Conditions
KA7812E/ER
Unit
Min.
Typ.
Max.
VO
Output Voltage
TJ = +25°C
11.5
12
12.5
V
5.0mA
≤ IO ≤ 1.0A, PO ≤ 15W
VI = 14.5V to 27V
11.4
12
12.6
Regline
Line Regulation(11)
TJ = +25°CVI = 14.5V to 30V
10
240
mV
VI = 16V to 22V
3.0
120
Regload
Load Regulation(11)
TJ = +25°CIO = 5mA to 1.5A
11
240
mV
IO = 250mA to 750mA
5.0
120
IQ
Quiescent Current
TJ = +25°C–
5.1
8.0
mA
∆IQ
Quiescent Current Change
IO = 5mA to 1.0A
0.1
0.5
mA
VI = 14.5V to 30V
0.5
1.0
∆VO/∆T
Output Voltage Drift(12)
IO = 5mA
-1
mV/
°C
VN
Output Noise Voltage
f = 10Hz to 100kHz, TA = +25°C–
76
µV/Vo
RR
Ripple Rejection(12)
f = 120Hz
VI = 15V to 25V
55
71
dB
VDrop
Dropout Voltage
IO = 1A, TJ = +25°C–
2
V
rO
Output Resistance(12)
f = 1kHz
18
m
ISC
Short Circuit Current
VI = 35V, TA = +25°C–
230
mA
IPK
Peak Current(12)
TJ = +25°C–
2.2
A


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