KA78XXAR View Datasheet(PDF) - Fairchild Semiconductor
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KA78XXAR Datasheet PDF : 28 Pages
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LM78XX (KA78XX, MC78XX) FIXED VOLTAGE REGULATOR (POSITIVE)
LM7808/I/R/RI ELECTRICAL CHARACTERISTICS
(Refer to test Circuit, TMIN <TJ< TMAX, IO = 500mA, VI = 14V, CI = 0.33µF, CO= 0.1µF, unless otherwise specified)
Characteristic
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple
Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Symbol
Test Conditions
VO
∆VO
∆VO
IQ
∆IQ
∆VO/∆T
VN
TJ =+25 °C
5.0mA ≤ IO ≤ 1.0A, PO ≤ 15W
VI = 10.5V to 23V
VI = 11.5V to 23V
TJ =+ 25°C VI = 10.5V to 25V
VI = 11.5V to 17V
TJ
=
+25°C
IO = 5.0mA
IO= 250mA
to
to
1.5A
750mA
TJ =+25 °C
IO = 5mA to 1.0A
VI = 10.5A to 25V
VI = 11.5V to 25V
IO = 5mA
f = 10Hz to 100Khz, TA =+25 °C
LM7808I
Min Typ Max
7.7 8.0 8.3
7.6 8.0 8.4
5.0 160
2.0 80
10 160
5.0 80
5.0 8
0.05 0.5
0.5 1.0
-0.8
52
LM7808
Min Typ Max
7.7 8.0 8.3
7.6 8.0 8.4
5.0 160
2.0 80
10 160
5.0 80
5.0 8
0.05 0.5
0.5 1.0
-0.8
52
RR f = 120Hz, VI= 11.5V to 21.5
56 73
56 73
VD IO = 1A, TJ=+25 °C
RO f = 1KHz
ISC VI= 35V, TA =+25 °C
IPK
TJ =+25 °C
2
2
17
17
230
230
2.2
2.2
Unit
V
mV
mV
mA
mA
mV/ °C
µV/Vo
dB
V
mΩ
mA
A
* TMIN <TJ <TMAX
LM78XXI/RI: TMIN= - 40 °C, TMAX = +125 °C
LM78XX/R: TMIN= 0 °C, TMAX= +125 °C
* Load and line regulation are specified at constant, junction temperature. Change in VO due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
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