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