Datasheet

MC7800, MC7800A, LM340, LM340A Series, NCV7805
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8
ELECTRICAL CHARACTERISTICS (continued) (V
in
= 19 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless
otherwise noted.)
MC7812B MC7812C/LM340T–12
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Noise Voltage (T
A
= 25°C) V
n
10 10 µV/V
O
10 Hz f 100 kHz
Output Resistance f = 1.0 kHz r
O
1.1 1.1 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
–0.8 –0.8 mV/°C
ELECTRICAL CHARACTERISTICS (V
in
= 19 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7812AB/MC7812AC/LM340AT–12
Characteristic Symbol Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
11.75 12 12.25 Vdc
Output Voltage (5.0 mA I
O
1.0 A, P
D
15 W) V
O
11.5 12 12.5 Vdc
14.8 Vdc V
in
27 Vdc
Line Regulation (Note 2) Reg
line
mV
14.8 Vdc V
in
30 Vdc, I
O
= 500 mA 3.8 18
16 Vdc V
in
22 Vdc, I
O
= 1.0 A 2.2 20
14.5 Vdc V
in
27 Vdc, T
J
= 25°C 6.0 120
Load Regulation (Note 2) Reg
load
mV
5.0 mA I
O
1.5 A, T
J
= 25°C 25
5.0 mA I
O
1.0 A 25
Quiescent Current I
B
3.4 6.0 mA
Quiescent Current Change I
B
mA
15 Vdc V
in
30 Vdc, I
O
= 500 mA 0.8
14.8 Vdc V
in
27 Vdc, T
J
= 25°C 0.8
5.0 mA I
O
1.0 A, T
J
= 25°C 0.5
Ripple Rejection RR 55 60 dB
15 Vdc V
in
25 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 µV/V
O
10 Hz f 100 kHz
Output Resistance (f = 1.0 kHz) r
O
1.1 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
–0.8 mV/°C
1. T
low
=0°C for MC78XXAC, C, LM340AT–XX, LM340T–XX T
high
= +125°C for MC78XXAC, C, LM340AT–XX, LM340T–XX, NCV7805
= 40°C for MC78XXB, MC78XXAB, NCV7805
2. 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.