Datasheet

MC7800, MC7800A, LM340, LM340A Series, NCV7805
http://onsemi.com
6
ELECTRICAL CHARACTERISTICS (continued) (V
in
= 14 V, I
O
= 500 mA, T
J
= T
low
to T
high
[Note 1], unless
otherwise noted.)
MC7808B MC7808C
Characteristic Symbol Min Typ Max Min Typ Max Unit
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 – µV/V
O
10 Hz ≤ f ≤ 100 kHz
Output Resistance f = 1.0 kHz r
O
– 0.9 – – 0.9 – mΩ
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
ELECTRICAL CHARACTERISTICS (V
in
= 14 V, I
O
= 1.0 A, T
J
= T
low
to T
high
[Note 1], unless otherwise noted.)
MC7808AB/MC7808AC
Characteristic Symbol Min Typ Max Unit
Output Voltage (T
J
= 25°C) V
O
7.84 8.0 8.16 Vdc
Output Voltage (5.0 mA ≤ I
O
≤ 1.0 A, P
D
≤ 15 W) V
O
7.7 8.0 8.3 Vdc
10.6 Vdc ≤ V
in
≤ 23 Vdc
Line Regulation (Note 2) Reg
line
mV
10.6 Vdc ≤ V
in
≤ 25 Vdc, I
O
= 500 mA – 6.0 15
11 Vdc ≤ V
in
≤ 17 Vdc, I
O
= 1.0 A – 1.7 18
10.4 Vdc ≤ V
in
≤ 23 Vdc, T
J
= 25°C – 5.0 15
Load Regulation (Note 2) Reg
load
mV
5.0 mA ≤ I
O
≤ 1.5 A, T
J
= 25°C – 1.4 25
5.0 mA ≤ I
O
≤ 1.0 A – 1.0 25
250 mA ≤ I
O
≤ 750 mA – 0.22 15
Quiescent Current I
B
– 3.3 6.0 mA
Quiescent Current Change ∆I
B
mA
11 Vdc ≤ V
in
≤ 25 Vdc, I
O
= 500 mA – – 0.8
10.6 Vdc ≤ V
in
≤ 23 Vdc, I
O
= 1.0 A, T
J
= 25°C – – 0.8
5.0 mA ≤ I
O
≤ 1.0 A – – 0.5
Ripple Rejection RR 56 62 – dB
11.5 Vdc ≤ V
in
≤ 21.5 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
– 0.9 – 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
– –0.4 – 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.