MC78XX/LM78XX/MC78XXA
Electrical Characteristics (MC7818)
(Refer to test circuit ,0°C < T
J
< 125°C, I
O
= 500mA, V
I
=27V, C
I
= 0.33µF, C
O
=0.1µF, unless otherwise specified)
Parameter
Symbol
T
J
=+25
o
C
Output Voltage
V
O
5.0mA
≤
I
O
≤1.0A,
P
O
≤15W
V
I
= 21V to 33V
T
J
=+25
o
C
V
I
= 21V to 33V
V
I
= 24V to 30V
I
O
= 5mA to 1.5A
I
O
= 250mA to 750mA
Conditions
MC7818
Min.
17.3
17.1
-
-
-
-
-
-
-
-
-
53
-
-
-
-
Typ. Max.
18
18
15
5
15
5.0
5.2
-
-
-1
110
69
2
22
250
2.2
18.7
18.9
360
180
360
180
8.0
0.5
1
-
-
-
-
-
-
-
V
mV
mV
mA
mA
mV/
o
C
µV/Vo
dB
V
mΩ
mA
A
Unit
Line Regulation (Note1)
Load Regulation (Note1)
Quiescent Current
Quiescent Current Change
Output Voltage Drift
Output Noise Voltage
Ripple Rejection
Dropout Voltage
Output Resistance
Short Circuit Current
Peak Current
Regline
Regload T
J
=+25
o
C
I
Q
∆I
Q
∆V
O
/∆T
V
N
RR
V
Drop
r
O
I
SC
I
PK
T
J
=+25
o
C
I
O
= 5mA to 1.0A
V
I
= 21V to 33V
I
O
= 5mA
f = 10Hz to 100KHz, T
A
=+25
o
C
f = 120Hz
V
I
= 22V to 32V
I
O
= 1A, T
J
=+25
o
C
f = 1KHz
V
I
= 35V, T
A
=+25
o
C
T
J
=+25
o
C
Note:
1. Load and line regulation are specified at constant junction temperature. Changes in V
O
due to heating effects must be taken
into account separately. Pulse testing with low duty is used.
9