Absolute Maximum Ratings(Note 1)
Parameter
Symbol
Value
Unit
V
Input Voltage (for V = 5V to 18V)
V
V
35
40
5
O
I
(for V = 24V)
V
O
I
Thermal Resistance Junction-Cases (TO-220)
Thermal Resistance Junction-Air (TO-220)
Operating Temperature Range
LM78xx
R
R
C/W
C/W
C
JC
JA
65
T
0
125
125
125
150
OPR
40
0
C
LM78xxA
C
Storage Temperature Range
T
65
C
STG
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The datasheet specifications should be met, without exception, to ensure
that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside datasheet specifica-
tions.
Electrical Characteristics (LM7805)
(Refer to the test circuits. 40 C
T
125 C, I = 500mA, V = 10V, C = 0.1 F, unless otherwise specified)
J
O
I
I
Parameter
Symbol
Conditions
Min
4.8
4.75
–
Typ
5.0
Max
5.2
5.25
100
50.0
100
50.0
8.0
0.5
1.3
–
Unit
Output Voltage
V
T
=
J
25 C
O
V
5mA
I
1A, P
15W, V = 7V to 20V
5.0
O
O
I
Line Regulation
(Note 2)
Regline
T
T
T
=
=
=
25 C
25 C
25 C
V
= 7V to 25V
O
4.0
J
J
J
mV
V = 8V to 12V
–
1.6
I
Load Regulation
Regload
I
I
= 5mA to 1.5mA
–
9.0
O
O
mV
mA
= 250mA to 750mA
–
4.0
Quiescent Current
I
–
5.0
Q
Quiescent Current Change
I
I
= 5mA to 1A
O
–
0.03
0.3
Q
mA
V = 7V to 25V
–
I
Output Voltage Drift (Note 3)
Output Noise Voltage
Ripple Rejection (Note 3)
Dropout Voltage
V
/
T
I
= 5mA
O
–
0.8
mV/ C
O
V
f = 10Hz to 100KHz, T
=
25 C
–
42.0
73.0
2.0
–
V/V
dB
V
N
A
O
RR
f = 120Hz, V = 8V to 18V
62.0
–
–
O
V
I
= 1A, T =
J
25 C
–
DROP
rO
O
Output Resistance (Note 3)
Short Circuit Current
f = 1KHz
V = 35V, T =
A
–
15.0
230
2.2
–
m
I
25 C
–
–
mA
A
SC
I
Peak Current (Note 3)
I
T
= 25 C
J
–
–
PK
Note 2: 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 3: These parameters, although guaranteed, are not 100% tested in production.
3
www.fairchildsemi.com
FAIRCHILD [ FAIRCHILD SEMICONDUCTOR ]
