MC7800, MC7800A, LM340, LM340A Series
10
MOTOROLA ANALOG IC DEVICE DATA
ELECTRICAL CHARACTERISTICS (continued)
(V
in
= 23 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7815AC/LM340AT–15
Characteristic Symbol Min Typ Max Unit
Ripple Rejection RR 60 80 – dB
18.5 Vdc ≤ V
in
≤ 28.5 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
– 1.2 – 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
– –1.0 – mV/°C
ELECTRICAL CHARACTERISTICS (V
in
= 27 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7818C
Characteristic Symbol Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
17.3 18 18.7 Vdc
Output Voltage (5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W) V
O
17.1 18 18.9 Vdc
21 Vdc ≤ V
in
≤ 33 Vdc
Line Regulation, (Note 2) Reg
line
mV
21 Vdc ≤ V
in
≤ 33 Vdc – 9.5 50
24 Vdc ≤ V
in
≤ 30 Vdc – 3.2 25
Load Regulation, (Note 2) Reg
load
– 2.0 55 mV
5.0 mA ≤ I
O
≤ 1.5 A
Quiescent Current I
B
– 3.5 6.5 mA
Quiescent Current Change ∆I
B
mA
21 Vdc ≤ V
in
≤ 33 Vdc – – 1.0
5.0 mA ≤ I
O
≤ 1.0 A – – 0.5
Ripple Rejection RR 53 57 – dB
22 Vdc ≤ V
in
≤ 33 Vdc, f = 120 Hz
Dropout Voltage (I
O
= 1.0 A, T
J
= 25°C) V
iI
– 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
NOTES: 1. T
low
= –40°C for MC78XXAC, C T
high
= +125°C for MC78XXAC, C
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.
