MC7800, MC7800A, NCV7805
ELECTRICAL CHARACTERISTICS (V = 33 V, I = 1.0 A, T = T to T (Note 30), unless otherwise noted)
high
in
O
J
low
MC7824AC
Characteristic
Symbol
Min
23.5
23.2
Typ
24
Max
24.5
25.8
Unit
Vdc
Vdc
Output Voltage (T = 25°C)
V
O
V
O
J
Output Voltage (5.0 mA ≤ I ≤ 1.0 A, P ≤ 15 W)
24
O
D
27.3 Vdc ≤ V ≤ 38 Vdc
in
Line Regulation (Note 31)
Reg
mV
line
27 Vdc ≤ V ≤ 38 Vdc, I = 500 mA
−
−
−
−
11.5
3.8
3.8
10
25
28
12
25
in
O
30 Vdc ≤ V ≤ 36 Vdc, I = 1.0 A
in
O
30 Vdc ≤ V ≤ 36 Vdc, T = 25°C
in
J
26.7 Vdc ≤ V ≤ 38 Vdc, I = 1.0 A, T = 25°C
in
O
J
Load Regulation (Note 31)
Reg
load
mV
5.0 mA ≤ I ≤ 1.5 A, T = 25°C
−
−
−
−
2.1
2.0
1.8
3.6
15
25
15
6.0
O
J
5.0 mA ≤ I ≤ 1.0 A
O
250 mA ≤ I ≤ 750 mA
O
Quiescent Current
I
B
mA
mA
Quiescent Current Change
DI
B
27.3 Vdc ≤ V ≤ 38 Vdc, I = 500 mA
−
−
−
−
0.8
0.8
0.5
−
in
O
27 Vdc ≤ V ≤ 38 Vdc, T = 25°C
in
J
5.0 mA ≤ I ≤ 1.0 A
−
−
O
Ripple Rejection
RR
45
54
dB
28 Vdc ≤ V ≤ 38 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
−
−
1.4
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
−2.0
mV/°C
O
30.T
= 0°C for MC78XXAC, C
T
high
= +125°C for MC78XXAC, C, NCV7805
low
= *40°C for MC78XXB, MC78XXAB, NCV7805
31.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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