MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS (V = 19 V, I = 1.0 A, T = T to T (Note 18), unless otherwise noted)
high
in
O
J
low
MC7812AB/MC7812AC
Characteristic
Output Voltage (T = 25°C)
Symbol
Min
11.75
11.5
Typ
12
Max
12.25
12.5
Unit
Vdc
Vdc
V
O
V
O
J
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
12
O
D
14.8 Vdc ≤ V ≤ 27 Vdc
in
Line Regulation (Note 19)
Reg
mV
line
14.8 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
−
−
−
3.8
2.2
6.0
18
20
in
O
16 Vdc ≤ V ≤ 22 Vdc, I = 1.0 A
in
O
14.5 Vdc ≤ V ≤ 27 Vdc, T = 25°C
120
in
J
Load Regulation (Note 19)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
−
−
−
−
−
25
25
O
J
5.0 mA ≤ I ≤ 1.0 A
O
Quiescent Current
I
B
3.4
6.0
mA
mA
Quiescent Current Change
15 Vdc ≤ V ≤ 30 Vdc, I = 500 mA
DI
B
−
−
−
−
0.8
0.8
0.5
−
in
O
14.8 Vdc ≤ V ≤ 27 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A, T = 25°C
−
−
O
J
Ripple Rejection
RR
55
60
dB
15 Vdc ≤ V ≤ 25 Vdc, f = 120 Hz, I = 500 mA
in
O
Dropout Voltage (I = 1.0 A, T = 25°C)
V − V
O
−
−
2.0
10
−
−
Vdc
O
J
I
Output Noise Voltage (T = 25°C)
V
n
mV/V
O
A
10 Hz ≤ f ≤ 100 kHz
Output Resistance (f = 1.0 kHz)
r
−
−
1.1
0.2
−
−
mW
O
Short Circuit Current Limit (T = 25°C)
I
A
A
SC
V
in
= 35 Vdc
Peak Output Current (T = 25°C)
I
−
−
2.2
−
−
A
J
max
Average Temperature Coefficient of Output Voltage
TCV
−0.8
mV/°C
O
18.T
= 0°C for MC78XXAC, C
T
high
= +125°C for MC78XXAC, C, NCV7805
low
= *40°C for MC78XXB, MC78XXAB, NCV7805
19.Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
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