MC7800, MC7800A, NCV7805
http://onsemi.com
7
ELECTRICAL CHARACTERISTICS (V
in
= 14 V, I
O
= 500 mA, T
J
= T
low
to T
high
(Note 9), unless otherwise noted)
MC7808B 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) V
O
Vdc
10.5 Vdc ≤ V
in
≤ 23 Vdc − − − 7.6 8.0 8.4
11.5 Vdc ≤ V
in
≤ 23 Vdc 7.6 8.0 8.4 − − −
Line Regulation, T
J
= 25°C, (Note 10) Reg
line
mV
10.5 Vdc ≤ V
in
≤ 25 Vdc − 6.0 160 − 6.0 32
11 Vdc ≤ V
in
≤ 17 Vdc − 1.7 80 − 1.7 16
Load Regulation, T
J
= 25°C (Note 10) Reg
load
− 1.4 160 − 1.4 35 mV
5.0 mA ≤ I
O
≤ 1.5 A
Quiescent Current I
B
− 3.3 8.0 − 3.3 8.0 mA
Quiescent Current Change I
B
mA
10.5 Vdc ≤ V
in
≤ 25 Vdc − − − − − 1.0
5.0 mA ≤ I
O
≤ 1.0 A − − 0.5 − − 0.5
Ripple Rejection RR − 62 − 56 62 − dB
11.5 Vdc ≤ V
in
≤ 18 Vdc, f = 120 Hz
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) V
n
− 10 − − 10 − V/V
O
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
O
− 0.9 − − 0.9 − m
Short Circuit Current Limit (T
A
= 25°C) I
SC
− 0.2 − − 0.2 − A
V
in
= 35 Vdc
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 MC78XXAC, C T
high
= +125°C for MC78XXAC, C, NCV7805
= 40°C for MC78XXB, MC78XXAB, NCV7805
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.
