www.fairchildsemi.com 16
LM7805 • LM7806 • LM7808 • LM7809 • LM7810 • LM7812 • LM7815 • LM7818 • LM7824 • LM7805A • LM7806A • LM7808A
•LM7809A • LM7810A • LM7812A • LM7815A • LM7818A • LM7824A
Electrical Characteristics (LM7824A)
(Refer to the test circuits. 0 C T
J
125 C, I
O
= 1A, V
I
= 33V, C
I
= 0.33 F, C
O
= 0.1 F, unless otherwise specified)
Note 36: 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 37: These parameters, although guaranteed, are not 100% tested in production.
Parameter Symbol Conditions Min Typ Max Units
Output Voltage V
O
T
J
= 25 C 23.5 24.0 24.5
V
I
O
= 5mA to 1A, P
O
15W, V
I
= 27.3V to 38V 23.0 24.0 25.0
Line Regulation Regline V
I
= 27V to 38V, I
O
= 500mA – 18.0 240
mV
(Note 36) V
I
= 21V to 33V – 6.0 240
T
J
= 25 CV
I
= 26.7V to 38V – 18.0 240
V
I
= 30V to 36V – 6.0 120
Load Regulation Regload T
J
= 25 C, I
O
= 5mA to 1.5mA – 15.0 100
mV(Note 36) I
O
= 5mA to 1mA – 15.0 100
I
O
= 250mA to 750mA – 7.0 50.0
Quiescent Current I
Q
T
J
= 25 C–5.26.0mA
Quiescent Current Change I
Q
I
O
= 5mA to 1A – – 0.5
mAV
I
= 27.3V to 38V, I
O
= 500mA – – 0.8
V
I
= 27.3V to 38V, T
J
= 25 C––0.8
Output Voltage Drift (Note 37) V
O
/ TI
O
= 5mA – 1.5 – mV/ C
Output Noise Voltage V
N
f = 10Hz to 100KHz, T
A
= 25 C – 10.0 – V/V
O
Ripple Rejection (Note 37) RR f = 120Hz, I
O
= 500mA, V
I
= 28V to 38V – 54.0 – dB
Dropout Voltage V
DROP
I
O
= 1A, T
J
= 25 C–2.0–V
Output Resistance (Note 37) rO f = 1KHz – 20.0 – m
Short Circuit Current I
SC
V
I
= 35V, T
A
= 25 C–250–mA
Peak Current (Note 37) I
PK
T
J
= 25 C–2.2–A
