Datasheet

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 5)
DC Input Voltage 35V
Internal Power Dissipation (Note 2) Internally Limited
Maximum Junction Temperature 150˚C
Storage Temperature Range −65˚C to +150˚C
Lead Temperature (Soldering, 10 sec.)
TO-3 Package (K) 300˚C
TO-220 Package (T), TO-263
Package (S) 230˚C
ESD Susceptibility (Note 3) 2 kV
Operating Conditions (Note 1)
Temperature Range (T
A
) (Note 2)
LM140 −55˚C to +125˚C
LM340A, LM340 0˚C to +125˚C
LM7808C 0˚C to +125˚C
LM340A Electrical Characteristics
I
OUT
= 1A, 0˚C ≤ T
J
≤ + 125˚C (LM340A) unless otherwise specified (Note 4)
Output Voltage 5V 12V 15V
Symbol Input Voltage (unless otherwise noted) 10V 19V 23V Units
Parameter Conditions Min Typ Max Min Typ Max Min Typ Max
V
O
Output Voltage T
J
= 25˚C 4.9 5 5.1 11.75 12 12.25 14.7 15 15.3 V
P
D
≤ 15W, 5 mA ≤ I
O
≤ 1A 4.8 5.2 11.5 12.5 14.4 15.6 V
V
MIN
≤ V
IN
≤ V
MAX
(7.5 ≤ V
IN
≤ 20) (14.8 ≤ V
IN
≤ 27) (17.9 ≤ V
IN
≤ 30) V
∆V
O
Line Regulation I
O
= 500 mA 10 18 22 mV
∆V
IN
(7.5 ≤ V
IN
≤ 20) (14.8 ≤ V
IN
≤ 27) (17.9 ≤ V
IN
≤ 30) V
T
J
= 25˚C 3 10 4 18 4 22 mV
∆V
IN
(7.5 ≤ V
IN
≤ 20) (14.5 ≤ V
IN
≤ 27) (17.5 ≤ V
IN
≤ 30) V
T
J
= 25˚C 4 9 10 mV
Over Temperature 12 30 30 mV
∆V
IN
(8 ≤ V
IN
≤ 12) (16 ≤ V
IN
≤ 22) (20 ≤ V
IN
≤ 26) V
∆V
O
Load Regulation T
J
= 25˚C 5 mA ≤ I
O
≤ 1.5A 10 25 12 32 12 35 mV
250 mA ≤ I
O
≤ 750
mA
15 19 21 mV
Over Temperature, 25 60 75 mV
5mA≤ I
O
≤ 1A
I
Q
Quiescent
Current
T
J
= 25˚C 6 6 6 mA
Over Temperature 6.5 6.5 6.5 mA
∆I
Q
Quiescent
Current
5mA≤ I
O
≤ 1A 0.5 0.5 0.5 mA
Change T
J
= 25˚C, I
O
= 1A 0.8 0.8 0.8 mA
V
MIN
≤ V
IN
≤ V
MAX
(7.5 ≤ V
IN
≤ 20) (14.8 ≤ V
IN
≤ 27) (17.9 ≤ V
IN
≤ 30) V
I
O
= 500 mA 0.8 0.8 0.8 mA
V
MIN
≤ V
IN
≤ V
MAX
(8 ≤ V
IN
≤ 25) (15 ≤ V
IN
≤ 30) (17.9 ≤ V
IN
≤ 30) V
V
N
Output Noise
Voltage
T
A
= 25˚C, 10 Hz ≤ f ≤ 100 kHz 40 75 90 µV
Ripple Rejection T
J
= 25˚C, f = 120 Hz, I
O
=1A688061726070dB
or f = 120 Hz, I
O
= 500 mA, 68 61 60 dB
Over Temperature,
V
MIN
≤ V
IN
≤ V
MAX
(8 ≤ V
IN
≤ 18) (15 ≤ V
IN
≤ 25) (18.5 ≤ V
IN
≤
28.5)
V
R
O
Dropout Voltage T
J
= 25˚C, I
O
= 1A 2.0 2.0 2.0 V
Output
Resistance
f=1kHz 8 18 19 mΩ
Short-Circuit
Current
T
J
= 25˚C 2.1 1.5 1.2 A
LM340/LM78XX
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