Datasheet

L78xxAB - L78xxAC Electrical characteristics
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Table 6. Electrical characteristics of L7808A (V
I
= 14 V, I
O
= 1 A, T
J
= 0 to 150 °C (L7808AC),
T
J
= -40 to 125 °C (L7808AB), unless otherwise specified)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
O
Output voltage T
J
= 25°C 7.84 8 8.16 V
V
O
Output voltage
I
O
= 5mA to 1A, P
O
≤15W
V
I
= 10.6 to 23V
7.7 8 8.3 V
ΔV
O
(1)
Line regulation
V
I
= 10.6 to 25V, I
O
= 500 mA 12 80 mV
V
I
= 11 to 17V 15 80 mV
V
I
= 11 to 17V, T
J
= 25°C 5 40 mV
V
I
= 10.4 to 23V, T
J
= 25°C 12 80 mV
ΔV
O
(1)
Load regulation
I
O
= 5mA to 1A 25 100 mV
I
O
= 5mA to 1.5A, T
J
= 25°C 30 100 V
I
O
= 250 to 750mA 10 50 V
I
q
Quiescent current
T
J
= 25°C 4.3 6 mA
6mA
ΔI
q
Quiescent current change
V
I
= 11 to 25V, I
O
= 500 mA 0.8 mA
V
I
= 10.6 to 23V, T
J
= 25°C 0.8 mA
I
O
= 5mA to 1A 0.5 mA
SVR Supply voltage rejection
V
I
= 11.5 to 21.5V, f = 120Hz,
I
O
= 500mA
62 dB
V
d
Dropout voltage I
O
= 1A, T
J
= 25°C 2 V
eN Output noise voltage T
A
= 25°C, B =10Hz to 100kHz 10 µV/V
O
R
O
Output resistance f =1kHz 18 mΩ
I
sc
Short circuit current V
I
= 35V, T
A
= 25°C 0.2 A
I
scp
Short circuit peak current T
J
= 25°C 2.2 A
ΔV
O
/ΔT Output voltage drift -0.8 mV/°C
1. 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.