MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS
(V
in
= 14 V, I
O
= 1.0 A, T
J
= T
low
to T
high
(Note 11), unless otherwise noted)
MC7808AB/MC7808AC
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
10.6 Vdc
≤
V
in
≤
23 Vdc
Line Regulation (Note 12)
10.6 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
11 Vdc
≤
V
in
≤
17 Vdc, I
O
= 1.0 A
10.4 Vdc
≤
V
in
≤
23 Vdc, T
J
= 25°C
Load Regulation (Note 12)
5.0 mA
≤
I
O
≤
1.5 A, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
250 mA
≤
I
O
≤
750 mA
Quiescent Current
Quiescent Current Change
11 Vdc
≤
V
in
≤
25 Vdc, I
O
= 500 mA
10.6 Vdc
≤
V
in
≤
23 Vdc, I
O
= 1.0 A, T
J
= 25°C
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
11.5 Vdc
≤
V
in
≤
21.5 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C)
Output Noise Voltage (T
A
= 25°C)
10 Hz
≤
f
≤
100 kHz
Output Resistance f = 1.0 kHz
Short Circuit Current Limit (T
A
= 25°C)
V
in
= 35 Vdc
Peak Output Current (T
J
= 25°C)
Average Temperature Coefficient of Output Voltage
Symbol
V
O
V
O
Reg
line
−
−
−
Reg
load
−
−
−
I
B
DI
B
−
−
−
RR
V
I
− V
O
V
n
r
O
I
SC
I
max
TCV
O
56
−
−
−
−
−
−
−
−
−
62
2.0
10
0.9
0.2
2.2
−0.4
0.8
0.8
0.5
−
−
−
−
−
−
−
dB
Vdc
mV/V
O
mW
A
A
mV/°C
−
1.4
1.0
0.22
3.3
25
25
15
6.0
mA
mA
6.0
1.7
5.0
15
18
15
mV
Min
7.84
7.7
Typ
8.0
8.0
Max
8.16
8.3
Unit
Vdc
Vdc
mV
11. T
low
= 0°C for MC78XXAC, C
T
high
= +125°C for MC78XXAC, C, NCV7805
=
*40°C
for MC78XXB, MC78XXAB, NCV7805
12. 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 cycle is used.
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