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) 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
DI
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 -
mV/V
O
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
O
- 0.9 - - 0.9 -
mW
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 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.