Datasheet

MC7800, MC7800A, MC7800AE, NCV7800
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS (V
in
= 14 V, I
O
= 500 mA, T
J
= T
low
to 125°C (Note 9), unless otherwise noted)
MC7808B/NCV7808B MC7808C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
7.7 8.0 8.3 7.7 8.0 8.3 Vdc
Output Voltage (5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W)
10.5 Vdc ≤ V
in
≤ 23 Vdc
11.5 Vdc ≤ V
in
≤ 23 Vdc
V
O
−
7.6
−
8.0
−
8.4
7.6
−
8.0
−
8.4
−
Vdc
Line Regulation, T
J
= 25°C, (Note 10)
10.5 Vdc ≤ V
in
≤ 25 Vdc
11 Vdc ≤ V
in
≤ 17 Vdc
Reg
line
−
−
6.0
1.7
160
80
−
−
6.0
1.7
32
16
mV
Load Regulation, T
J
= 25°C (Note 10)
5.0 mA ≤ I
O
≤ 1.5 A
Reg
load
− 1.4 160 − 1.4 35
mV
Quiescent Current I
B
− 3.3 8.0 − 3.3 8.0 mA
Quiescent Current Change
10.5 Vdc ≤ V
in
≤ 25 Vdc
5.0 mA ≤ I
O
≤ 1.0 A
DI
B
−
−
−
−
−
0.5
−
−
−
−
1.0
0.5
mA
Ripple Rejection
11.5 Vdc ≤ V
in
≤ 18 Vdc, f = 120 Hz
RR
− 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
9. T
low
=0°C for MC78XXC, MC78XXAC,
= *40°C for NCV78XX, MC78XXB, MC78XXAB, and MC78XXAEB
10.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.