L7800AB/AC SERIES
ELECTRICAL CHARACTERISTICS OF L7820A (V =28V, I =1A, T = 0 to 150°C (L7820AC),
I
O
J
T = -40 to 125°C (L7820AB), unless otherwise specified.)
J
Symbol
Parameter
Output Voltage
Output Voltage
Test Conditions
Min.
19.6
19.2
Typ.
20
Max.
20.4
20.8
Unit
V
V
V
T = 25°C
J
O
O
I
= 5mA to 1A
P
≤ 15W
O
20
V
O
V = 23 to 35V
I
∆V (*) Line Regulation
V = 23 to 35V
I = 500 mA
O
200
200
100
200
100
100
50
mV
mV
mV
mV
mV
V
O
I
V = 26 to 32V
I
V = 26 to 32V
T = 25°C
J
I
V = 23 to 32V
T = 25°C
J
I
∆V (*) Load Regulation
I
I
I
= 5mA to 1A
25
30
10
4.5
O
O
O
O
= 5mA to 1.5A T = 25°C
J
= 250 to 750mA
V
I
Quiescent Current
T
= 25°C
J
6
mA
q
6
mA
mA
∆I
Quiescent Current Change V = 23 to 35V
I = 500 mA
O
0.8
q
I
V = 23 to 35V
T = 25°C
0.8
0.5
mA
mA
dB
I
J
I
= 5mA to 1A
O
SVR
Supply Voltage Rejection
V = 24 to 35V
f = 120Hz
56
I
I
= 500mA
O
O
V
Dropout Voltage
I
=1 A
T = 25°C
2
V
d
J
eN
Output Noise Voltage
Output Resistance
T
= 25°C
B =10Hz to 100KHz
10
20
0.2
2.2
-1
µV/V
mΩ
A
A
O
R
f =1KHz
V = 35V
O
I
Short Circuit Current
Short Circuit Peak Current
T = 25°C
A
sc
I
I
T
= 25°C
J
A
scp
∆V /∆T Output Voltage Drift
mV/°C
O
(*) Load and Line Regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account
O
separately. Pulse testing with low duty cycle is used.
12/18
STMICROELECTRONICS [ ST ]
