
MC7800, MC7800A, NCV7805
http://onsemi.com
18
ELECTRICAL CHARACTERISTICS
(V
in
= 33 V, I
O
= 1.0 A, T
J
= T
low
to T
high
(Note 30), unless otherwise noted)
MC7824AC
Characteristic
Symbol
Min
Typ
Max
Unit
Output Voltage (T
J
= 25
°
C)
Output Voltage (5.0 mA
≤
I
O
≤
1.0 A, P
D
≤
15 W)
V
O
23.5
24
24.5
Vdc
V
O
23.2
24
25.8
Vdc
27.3 Vdc
≤
V
in
≤
38 Vdc
Line Regulation (Note 31)
Reg
line
mV
27 Vdc
≤
V
in
≤
38 Vdc, I
O
= 500 mA
30 Vdc
≤
V
in
≤
36 Vdc, I
O
= 1.0 A
-
11.5
25
-
3.8
28
30 Vdc
≤
V
in
≤
36 Vdc, T
J
= 25
°
C
-
3.8
12
26.7 Vdc
≤
V
in
≤
38 Vdc, I
O
= 1.0 A, T
J
= 25
°
C
-
10
25
Load Regulation (Note 31)
Reg
load
mV
5.0 mA
≤
I
O
≤
1.5 A, T
J
= 25
°
C
-
2.1
15
5.0 mA
≤
I
O
≤
1.0 A
-
2.0
25
250 mA
≤
I
O
≤
750 mA
-
1.8
15
Quiescent Current
I
B
-
3.6
6.0
mA
Quiescent Current Change
I
B
mA
27.3 Vdc
≤
V
in
≤
38 Vdc, I
O
= 500 mA
-
-
0.8
27 Vdc
≤
V
in
≤
38 Vdc, T
J
= 25
°
C
-
-
0.8
5.0 mA
≤
I
O
≤
1.0 A
-
-
0.5
Ripple Rejection
RR
45
54
-
dB
28 Vdc
≤
V
in
≤
38 Vdc, f = 120 Hz, I
O
= 500 mA
Dropout Voltage (I
O
= 1.0 A, T
J
= 25
°
C)
V
I
- V
O
-
2.0
-
Vdc
Output Noise Voltage (T
A
= 25
°
C)
V
n
-
10
-
V/V
O
10 Hz
≤
f
≤
100 kHz
Output Resistance (f = 1.0 kHz)
r
O
-
1.4
-
m
Short Circuit Current Limit (T
A
= 25
°
C)
I
SC
-
0.2
-
A
V
in
= 35 Vdc
Peak Output Current (T
J
= 25
°
C)
I
max
-
2.2
-
A
Average Temperature Coefficient of Output Voltage
TCV
O
-
-2.0
-
mV/
°
C
30.T
low
= 0
°
C for MC78XXAC, CT
=
40
°
C for MC78XXB, MC78XXAB, NCV7805
31.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.
high
= +125
°
C for MC78XXAC, C, NCV7805