Electrical Characteristics (LM7809A)
(Refer to the test circuits. 0 C
T
125 C, I = 1A, V = 15V, C = 0.33 F, C = 0.1 F, unless otherwise specified)
J
O
I
I
O
Parameter
Symbol
Conditions
Min
8.82
8.65
–
Typ
9.0
9.0
6.0
4.0
6.0
2.0
12.0
12.0
5.0
5.0
–
Max
9.16
9.35
90.0
45.0
90.0
45.0
100
100
50.0
6.0
0.5
0.8
0.8
–
Units
Output Voltage
V
T
=
25 C
O
J
V
I
= 5mA to 1A, P
15W, V = 11.2V to 24V
I
O
O
Line Regulation
(Note 26)
Regline
V = 11.7V to 25V, I = 500mA
I O
V = 12.5V to 19V
–
I
mV
T
=
25 C
V = 11.5V to 24V
–
J
J
I
V = 12.5V to 19V
–
I
Load Regulation
(Note 26)
Regload
T
=
25 C, I = 5mA to 1.0mA
–
O
I
I
= 5mA to 1mA
–
mV
mA
O
= 250mA to 750mA
–
O
Quiescent Current
I
T
=
25 C
= 5mA to 1A
O
–
Q
J
Quiescent Current Change
I
I
–
Q
V = 12V to 25V, I = 500mA
–
–
mA
I
O
V = 11.7V to 25V, T
=
J
25 C
–
–
I
Output Voltage Drift (Note 27)
Output Noise Voltage
V
/
T
I
= 5mA
O
–
1.0
10.0
62.0
2.0
17.0
250
2.2
mV/ C
O
V
f = 10Hz to 100KHz, T
=
25 C
–
–
V/V
dB
V
N
A
O
Ripple Rejection (Note 27)
Dropout Voltage
RR
f = 120Hz, I = 500mA, V = 12V to 22V
–
–
O
I
V
I
= 1A, T
J
=
25 C
–
–
DROP
rO
O
Output Resistance (Note 27)
Short Circuit Current
f = 1KHz
V = 35V, T =
A
–
–
m
I
25 C
–
–
mA
A
SC
I
Peak Current (Note 27)
I
T
= 25 C
J
–
–
PK
Note 26: Load and line regulation are specified at constant junction temperature. Changes in V due to heating effects must be taken into account separately. Pulse testing with
O
low duty is used.
Note 27: These parameters, although guaranteed, are not 100% tested in production.
11
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