MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS
(V
in
= 19 V, I
O
= 500 mA, T
J
= T
low
to T
high
(Note 16), unless otherwise noted)
MC7812B
Characteristic
Output Voltage (T
J
= 25°C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
14.5 Vdc
≤
V
in
≤
27 Vdc
15.5 Vdc
≤
V
in
≤
27 Vdc
Line Regulation, T
J
= 25°C (Note 17)
14.5 Vdc
≤
V
in
≤
30 Vdc
16 Vdc
≤
V
in
≤
22 Vdc
14.8 Vdc
≤
V
in
≤
27 Vdc, I
O
= 1.0 A
Load Regulation, T
J
= 25°C (Note 17)
5.0 mA
≤
I
O
≤
1.5 A
Quiescent Current
Quiescent Current Change
14.5 Vdc
≤
V
in
≤
30 Vdc, I
O
= 1.0 A, T
J
= 25°C
15 Vdc
≤
V
in
≤
30 Vdc
5.0 mA
≤
I
O
≤
1.0 A
Ripple Rejection
15 Vdc
≤
V
in
≤
25 Vdc, f = 120 Hz
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
I
max
TCV
O
−
−
2.2
−0.8
−
−
−
−
2.2
−0.8
−
−
A
mV/°C
r
O
I
SC
−
−
1.1
0.2
−
−
−
−
1.1
0.2
−
−
mW
A
V
I
− V
O
V
n
−
−
2.0
10
−
−
−
−
2.0
10
−
−
Vdc
mV/V
O
RR
I
B
DI
B
−
−
−
−
−
−
−
60
−
1.0
0.5
−
−
−
−
55
−
−
−
60
0.7
0.8
0.5
−
dB
−
3.4
8.0
−
3.4
6.5
mA
mA
Reg
load
Reg
line
−
−
−
−
7.5
2.2
−
1.6
240
120
−
240
−
−
−
−
3.8
0.3
−
8.1
24
24
48
60
mV
Symbol
V
O
V
O
−
11.4
−
12
−
12.6
11.4
−
12
−
12.6
−
mV
Min
11.5
Typ
12
Max
12.5
Min
11.5
MC7812C
Typ
12
Max
12.5
Unit
Vdc
Vdc
16. T
low
= 0°C for MC78XXAC, C
T
high
= +125°C for MC78XXAC, C, NCV7805
=
*40°C
for MC78XXB, MC78XXAB, NCV7805
17. 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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