Absolute Maximum Ratings
(Note 1)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Input Voltage
(V
o
e b
5V)
(V
o
e b
12V and
b
15V)
b
25V
b
35V
Input-Output Differential
(V
o
e b
5V)
(V
o
e b
12V and
b
15V)
Power Dissipation (Note 2)
25V
30V
Internally Limited
Operating Junction Temperature Range
0 C to
a
125 C
b
65 C to
a
150 C
Storage Temperature Range
Lead Temperature (Soldering 10 sec )
230 C
Electrical Characteristics
Conditions unless otherwise noted I
OUT
e
500 mA C
IN
e
2 2
mF
C
OUT
e
1
mF
0 C
s
T
J
s
a
125 C Power Dissipation
s
1 5W
Part Number
Output Voltage
Input Voltage (unless otherwise specified)
Symbol
V
O
Parameter
Output Voltage
Conditions
T
J
e
25 C
5 mA
s
I
OUT
s
1A
P
s
15W
T
J
e
25 C (Note 3)
Min
b
4 8
b
4 75
LM7905C
b
5V
b
10V
Units
Max
b
5 2
b
5 25
Typ
b
5 0
(
b
20
s
V
IN
s
b
7)
8
(
b
25
s
V
IN
s
b
7)
2
(
b
12
s
V
IN
s
b
8)
15
5
1
(
b
25
s
V
IN
s
b
7)
50
15
V
V
V
mV
V
mV
V
mV
mV
mA
mA
V
mA
mV
dB
V
V
A
mV C
DV
O
Line Regulation
DV
O
Load Regulation
T
J
e
25 C (Note 3)
5 mA
s
I
OUT
s
1 5A
250 mA
s
I
OUT
s
750 mA
T
J
e
25 C
With Line
With Load 5 mA
s
I
OUT
s
1A
100
50
2
05
05
I
Q
DI
Q
Quiescent Current
Quiescent Current
Change
Output Noise Voltage
Ripple Rejection
Dropout Voltage
V
n
T
A
e
25 C 10 Hz
s
f
s
100 Hz
f
e
120 Hz
T
J
e
25 C I
OUT
e
1A
T
J
e
25 C
I
OUT
e
5 mA
0 C
s
T
J
s
100 C
54
125
66
(
b
18
s
V
IN
s
b
8)
11
22
04
I
OMAX
Peak Output Current
Average Temperature
Coefficient of
Output Voltage
Typical Applications
(Continued)
Variable Output
TL H 7340 – 2
Improves transient response and ripple rejection Do not increase beyond 50
mF
V
OUT
e
V
SET
Select R2 as
LM7905CT
LM7912CT
LM7915CT
R1
a
R2
R2
follows
300X
750X
1k
J
2
NSC [ NATIONAL SEMICONDUCTOR ]
