ELECTRICAL CHARACTERISTICS FOR L7808A
(V
i
= 14V, I
o
= 1 A, T
j
= 0 to 125
o
C (L7808AC),
T
j
= -40 to 125
o
C (L7808AB)unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage T
j
=25
o
C7.8488.16V
V
o
Output Voltage I
o
= 5 mA to 1 A P
o
≤
15 W
V
i
= 10.6to 23 V
7.788.3V
∆
V
o
* LineRegulation V
i
= 10.6to 25 V I
o
= 500 mA
V
i
=11to17V
V
i
=11to17V T
j
=25
o
C
V
i
= 10.4to 23 V T
j
=25
o
C
12
15
5
12
80
80
40
80
mV
mV
mV
mV
∆V
o
* Load Regulation I
o
= 5 mA to 1 A
I
o
= 5 mA to 1.5 A T
j
=25
o
C
I
o
= 250 to 750 mA
25
30
10
100
100
50
mV
mV
mV
I
d
Quiescent Current T
j
=25
o
C4.36
6
mA
∆
I
d
Quiescent Current Change V
i
=11to25V I
o
= 500mA
V
i
= 10.6to 23 V T
j
=25
o
C
I
o
= 5 mA to 1 A
0.8
0.8
0.5
mA
mA
mA
SVR Supply Voltage Rejection V
i
= 11.5to 21.5 V f = 120 Hz
I
o
= 500 mA
62 dB
V
d
Dropout Voltage I
o
=1A T
j
=25
o
C2V
e
N
Output Noise Voltage B = 10Hz to 100KHz T
j
=25
o
C10
µ
V/V
o
R
o
Output Resistance f = 1KHz 18 m
Ω
I
sc
Short Circuit Current V
i
=35V T
amb
=25
o
C0.2A
I
scp
Short Circuit Peack Current T
j
=25
o
C2.2A
∆
V
o
∆
T
Output Voltage Drift -0.8 mV/
o
C
* 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.
L7800AB/AC
7/17
