Datasheet

MC7800, MC7800A, LM340, LM340A Series, NCV7805
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11
ELECTRICAL CHARACTERISTICS (V
in
= 27 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7818AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
17.64 18 18.36 Vdc
Output Voltage (5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W) V
O
17.3 18 18.7 Vdc
21 Vdc ≤ V
in
≤ 33 Vdc
Line Regulation (Note 2) Reg
line
mV
21 Vdc ≤ V
in
≤ 33 Vdc, I
O
= 500 mA – 9.5 22
24 Vdc ≤ V
in
≤ 30 Vdc, I
O
= 1.0 A – 3.2 25
24 Vdc ≤ V
in
≤ 30 Vdc, I
O
= 1.0 A, T
J
= 25°C – 3.2 10.5
20.6 Vdc ≤ V
in
≤ 33 Vdc, I
O
= 1.0 A, T
J
= 25°C – 8.0 22
Load Regulation (Note 2) Reg
load
mV
5.0 mA ≤ I
O
≤ 1.5 A, T
J
= 25°C – 2.0 25
5.0 mA ≤ I
O
≤ 1.0 A – 1.8 25
250 mA ≤ I
O
≤ 750 mA – 1.5 15
Quiescent Current I
B
– 3.5 6.0 mA
Quiescent Current Change ∆I
B
mA
21 Vdc ≤ V
in
≤ 33 Vdc, I
O
= 500 mA – – 0.8
21.5 Vdc ≤ V
in
≤ 30 Vdc, T
J
= 25°C – – 0.8
5.0 mA ≤ I
O
≤ 1.0 A – – 0.5
Ripple Rejection RR 53 57 – dB
22 Vdc ≤ V
in
≤ 32 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
– 1.3 – mΩ
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
– –1.5 – mV/°C
ELECTRICAL CHARACTERISTICS (V
in
= 33 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7824B MC7824C
Characteristic Symbol Min Typ Max Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
23 24 25 23 24 25 Vdc
Output Voltage (5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W) V
O
Vdc
27 Vdc ≤ V
in
≤ 38 Vdc – – – 22.8 24 25.2
28 Vdc ≤ V
in
≤ 38 Vdc 22.8 24 25.2 – – –
Line Regulation, (Note 2) Reg
line
mV
27 Vdc ≤ V
in
≤ 38 Vdc – 11.5 480 – 2.7 60
30 Vdc ≤ V
in
≤ 36 Vdc – 3.8 240 – 2.7 48
Load Regulation, (Note 2) Reg
load
– 2.1 480 – 4.4 65 mV
5.0 mA ≤ I
O
≤ 1.5 A
Quiescent Current I
B
– 3.6 8.0 – 3.6 6.5 mA
Quiescent Current Change ∆I
B
mA
27 Vdc ≤ V
in
≤ 38 Vdc – – – – – 1.0
5.0 mA ≤ I
O
≤ 1.0 A – – 0.5 – – 0.5
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.