LM340/LM78XX
LM7808C
Electrical Characteristics
0˚C
≤
T
J
≤
+150˚C, V
I
= 14V, I
O
= 500 mA, C
I
= 0.33 µF, C
O
= 0.1 µF, unless otherwise specified
Symbol
V
O
∆V
O
∆V
O
Parameter
Output Voltage
Line Regulation
Load Regulation
T
J
= 25˚C
T
J
= 25˚C
T
J
= 25˚C
10.5V
≤
V
I
≤
25V
11.0V
≤
V
I
≤
17V
5.0 mA
≤
I
O
≤
1.5A
250 mA
≤
I
O
≤
750
mA
V
O
I
Q
∆I
Q
V
N
∆V
I
/∆V
O
V
DO
R
O
I
OS
I
PK
∆V
O
/∆T
Output Voltage
Quiescent Current
Quiescent
Current Change
Noise
Ripple Rejection
Dropout Voltage
Output Resistance
Output Short Circuit Current
Peak Output Current
Average Temperature
Coefficient of Output Voltage
Note 6:
All characteristics are measured with a 0.22 µF capacitor from input to ground and a 0.1 µF capacitor from output to ground. All characteristics except noise
voltage and ripple rejection ratio are measured using pulse techniques (t
w
≤
10 ms, duty cycle
≤
5%). Output voltage changes due to changes in internal temperature
must be taken into account separately.
Conditions
Min
7.7
LM7808C
Typ
8.0
6.0
2.0
12
4.0
7.6
4.3
Max
8.3
160
80
160
80
8.4
8.0
1.0
0.5
52
56
72
2.0
16
0.45
2.2
0.8
Units
V
mV
mV
11.5V
≤
V
I
≤
23V, 5.0 mA
≤
I
O
≤
1.0A, P
≤
15W
T
J
= 25˚C
With Line
With Load
11.5V
≤
V
I
≤
25V
5.0 mA
≤
I
O
≤
1.0A
T
A
= 25˚C, 10 Hz
≤
f
≤
100 kHz
f = 120 Hz, I
O
= 350 mA, T
J
= 25˚C
I
O
= 1.0A, T
J
= 25˚C
f = 1.0 kHz
T
J
= 25˚C, V
I
= 35V
T
J
= 25˚C
I
O
= 5.0 mA
V
mA
mA
µV
dB
V
mΩ
A
A
mV/˚C
7
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