3 www.fairchildsemi.com
LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A
•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824A
Absolute Maximum Ratings(Note 1)
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
J
125 C, I
O
= 500mA, V
I
= 10V, C
I
= 0.1 F, unless otherwise specified)
Note 2: 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 is used.
Note 3: These parameters, although guaranteed, are not 100% tested in production.
Parameter Symbol Value Unit
Input Voltage (for V
O
= 5V to 18V) V
I
35 V
(for V
O
= 24V) V
I
40 V
Thermal Resistance Junction-Cases (TO-220) R
JC
5 C/W
Thermal Resistance Junction-Air (TO-220) R
JA
65 C/W
Operating Temperature Range T
OPR
0 125 C
LM78xx
40 125 C
LM78xxA 0
125 C
Storage Temperature Range T
STG
65 150 C
Parameter Symbol Conditions Min Typ Max Unit
Output Voltage V
O
T
J
= 25 C4.85.05.2
V
5mA I
O
1A, P
O
15W, V
I
= 7V to 20V 4.75 5.0 5.25
Line Regulation Regline T
J
= 25 CV
O
= 7V to 25V – 4.0 100
mV
(Note 2) V
I
= 8V to 12V – 1.6 50.0
Load Regulation Regload T
J
= 25 CI
O
= 5mA to 1.5mA – 9.0 100
mV
I
O
= 250mA to 750mA – 4.0 50.0
Quiescent Current I
Q
T
J
= 25 C–5.08.0mA
Quiescent Current Change I
Q
I
O
= 5mA to 1A – 0.03 0.5
mA
V
I
= 7V to 25V – 0.3 1.3
Output Voltage Drift (Note 3) V
O
/ TI
O
= 5mA – 0.8 – mV/ C
Output Noise Voltage V
N
f = 10Hz to 100KHz, T
A
= 25 C – 42.0 – V/V
O
Ripple Rejection (Note 3) RR f = 120Hz, V
O
= 8V to 18V 62.0 73.0 – dB
Dropout Voltage V
DROP
I
O
= 1A, T
J
= 25 C–2.0–V
Output Resistance (Note 3) rO f = 1KHz – 15.0 – m
Short Circuit Current I
SC
V
I
= 35V, T
A
= 25 C–230–mA
Peak Current (Note 3) I
PK
T
J
= 25 C–2.2–A
