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)
LM105
50V
40V
800 mW
LM305
40V
40V
800 mW
0C to +70C
65C to +150C
300C
LM305A
50V
40V
800 mW
0C to +70C
65C to +150C
300C
Input Voltage
Input-Output Differential
Power Dissipation (Note 1)
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering, 10 seconds)
55C to +125C
65C to +150C
300C
Electrical Characteristics
(Note 2)
Parameter
Conditions
LM105
Typ
LM305
Typ
LM305A
Typ
Units
Min
8.5
4.5
3.0
Max
50
40
30
Min
8.5
4.5
3.0
Max
40
30
30
Min
8.5
4.5
3.0
Max
50
40
30
Input Voltage Range
Output Voltage Range
Input-Output Voltage
Differential
Load Regulation
(Note 3)
V
V
V
R
SC
= 10
, T
A
= 25C
R
SC
= 10
, T
A
= T
A(MAX)
R
SC
= 10
, T
A
= T
A(MIN)
0.02
0.03
0.03
0.05
0.1
0.1
0.02
0.03
0.03
0.05
0.1
0.1
%
%
%
0
≤
I
O
≤
12 mA
0
≤
I
O
≤
12 mA
R
SC
= 0
, T
A
= 25C
R
SC
= 0
, T
A
= 70C
R
SC
= 0
, T
A
= 0C
0.02
0.03
0.03
0.2
0.4
0.4
%
%
%
0
≤
I
O
≤
45 mA
Line Regulation
T
A
= 25C
0C
≤
T
A
≤
+70C
V
IN
V
OUT
≤
5V, T
A
= 25C
V
IN
V
OUT
≥
5V, T
A
= 25C
T
A(MIN)
≤
T
A
≤
T
A(MAX)
%/V
%/V
%/V
%/V
%
V
0.025
0.015
0.3
1.7
0.06
0.03
1.0
1.81
0.025
0.015
0.3
1.7
0.06
0.03
1.0
1.81
0.025
0.015
0.3
1.7
0.06
0.03
1.0
1.85
Temperature Stability
Feedback Sense
Voltage
Output Noise Voltage
1.63
1.63
1.55
10 Hz
≤
f
≤
10 kHz
C
REF
= 0
C
REF
= 0.1 μF
V
IN
= 30V, T
A
= 25C
V
IN
= 40V
V
IN
= 50V
T
A
= 25C, R
SC
= 10
,
V
OUT
= 0V, (Note 4)
0.005
0.002
0.005
0.002
0.005
0.002
%
%
mA
mA
mA
mV
Standby Current Drain
0.8
2.0
0.8
300
2.0
375
0.8
300
2.0
375
Current Limit
Sense Voltage
Long Term Stability
Ripple Rejection
225
225
300
375
225
0.1
0.003
230
0.1
0.003
230
0.1
0.003
230
%
C
REF
= 10 μF, f = 120 Hz
TO-99 Board Mount
in Still Air
TO-99 Board Mount in
400 LF/Min Air Flow
TO-99
%/V
C/W
θ
JA
θ
JA
92
92
92
C/W
θ
JC
25
25
25
C/W
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