MC78XX/LM78XX/MC78XXA
Electrical Characteristics (MC7808A)
(Refer to the test circuits. 0°C < T < 125°C, I =1A, V = 14V, C =0.33µF, C =0.1µF, unless otherwise specified)
J
o
I
I
O
Parameter
Output Voltage
Symbol
Conditions
T =+25 oC
Min. Typ. Max.
Unit
7.84
8
8.16
J
V
O
V
I
= 5mA to 1A, P ≤15W
O
V = 10.6V to 23V
O
I
7.7
8
8.3
V = 10.6V to 25V
I
-
6
80
I
= 500mA
O
Line Regulation (Note1)
Load Regulation (Note1)
V = 11V to 17V
I
-
-
-
3
6
2
80
80
40
Regline
mV
V = 10.4V to 23V
I
T =+25 oC
J
V = 11V to 17V
I
T =+25 oC
J
-
12
100
I
I
I
= 5mA to 1.5A
O
O
O
Regload
mV
= 5mA to 1A
-
-
-
-
-
-
-
12
100
50
6
= 250mA to 750mA
5
5.0
-
Quiescent Current
I
T =+25 oC
mA
mA
Q
J
I
= 5mA to 1A
0.5
0.8
0.8
-
O
Quiescent Current Change
∆I
V = 11V to 25V, I = 500mA
-
Q
I
O
V = 10.6V to 23V, T =+25 oC
-
I
J
Output Voltage Drift
Output Noise Voltage
∆V/∆T
I
= 5mA
-0.8
mV/ oC
O
f = 10Hz to 100KHz
V
N
-
-
10
62
-
-
µV/Vo
T =+25 oC
A
f = 120Hz, I = 500mA
O
Ripple Rejection
RR
dB
V = 11.5V to 21.5V
I
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
V
I
= 1A, T =+25 oC
-
-
-
-
2
-
-
-
-
V
mΩ
mA
A
Drop
O
J
r
O
f = 1KHz
V = 35V, T =+25 oC
T =+25 oC
18
I
250
2.2
SC
I
A
I
PK
J
Note:
1. Load and line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken
O
into account separately. Pulse testing with low duty is used.
13
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
