Datasheet

MC7800, MC7800A, MC7800AE, NCV7800
http://onsemi.com
8
ELECTRICAL CHARACTERISTICS (V
in
= 14 V, I
O
= 1.0 A, T
J
= T
low
to 125C (Note 11), unless otherwise noted)
Characteristic
Symbol
MC7808AB/MC7808AC
MC7808AEB
Unit
Min Typ Max Min Typ Max
Output Voltage (T
J
= 25C) V
O
7.84 8.0 8.16 7.88 − 8.12 Vdc
Output Voltage (5.0 mA  I
O
 1.0 A, P
D
 15 W)
10.6 Vdc  V
in
 23 Vdc
V
O
7.7 8.0 8.3 7.88 − 8.12
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
Reg
line
−
−
−
6.0
1.7
5.0
15
18
15
−
−
−
6.0
1.7
5.0
15
18
15
mV
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
Reg
load
−
−
−
1.4
1.0
0.22
25
25
15
−
−
−
1.4
1.0
0.22
25
25
15
mV
Quiescent Current I
B
− 3.3 6.0 − 3.3 6.0 mA
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
DI
B
−
−
−
−
−
−
0.8
0.8
0.5
−
−
−
−
−
−
0.8
0.8
0.5
mA
Ripple Rejection
11.5 Vdc  V
in
 21.5 Vdc, f = 120 Hz, I
O
= 500 mA
RR
56 62 − 56 62 −
dB
Dropout Voltage (I
O
= 1.0 A, T
J
= 25C) V
I
− V
O
− 2.0 − − 2.0 − Vdc
Output Noise Voltage (T
A
= 25C)
10 Hz  f  100 kHz
V
n
− 10 − − 10 −
mV/V
O
Output Resistance f = 1.0 kHz r
O
− 0.9 − − 0.9 −
mW
Short Circuit Current Limit (T
A
= 25C)
V
in
= 35 Vdc
I
SC
− 0.2 − − 0.2 −
A
Peak Output Current (T
J
= 25C) I
max
− 2.2 − − 2.2 − A
Average Temperature Coefficient of Output Voltage TCV
O
− −0.4 − − −0.4 − mV/C
11. T
low
=0C for MC78XXC, MC78XXAC,
= *40C for NCV78XX, MC78XXB, MC78XXAB, and MC78XXAEB
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.