LM317L
Absolute Maximum Ratings
(Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Dissipation
Input-Output Voltage Differential
Operating Junction Temperature
Range
Internally Limited
40V
−40˚C to +125˚C
Storage Temperature
Lead Temperature
(Soldering, 4 seconds)
Output is Short Circuit Protected
ESD rating to be determined.
−55˚C to +150˚C
260˚C
Electrical Characteristics
(Note 2)
Parameter
Line Regulation
Load Regulation
Thermal Regulation
Adjustment Pin Current
Adjustment Pin Current
Change
Reference Voltage
Line Regulation
Load Regulation
Temperature Stability
Minimum Load Current
Current Limit
Rms Output Noise, % of V
OUT
Ripple Rejection Ratio
Long-Term Stability
Thermal Resistance
Junction to Ambient
5mA
≤
I
L
≤
100mA
3V
≤
(V
IN
− V
OUT
)
≤
40V, P
≤
625mW
3V
≤
(V
IN
− V
OUT
)
≤
40V, (Note 4)
5mA
≤
I
OUT
≤
100mA, P
≤
625mW
3V
≤
(V
IN
− V
OUT
)
≤
40V, I
L
≤
20mA (Note 3)
5mA
≤
I
OUT
≤
100mA, (Note 3)
T
MIN
≤
T
J
≤
T
Max
(V
IN
− V
OUT
)
≤
40V
3V
≤
(V
IN
− V
OUT
)
≤
15V
3V
≤
(V
IN
− V
OUT
)
≤
13V
(V
IN
− V
OUT
) = 40V
T
J
= 25˚C, 10Hz
≤
f
≤
10kHz
V
OUT
= 10V, f = 120Hz, C
ADJ
= 0
C
ADJ
= 10µF
T
J
= 125˚C, 1000 Hours
Z Package 0.4" Leads
Z Package 0.125 Leads
SO-8 Package
6-Bump micro SMD
Thermal Rating of SO
Package
66
100
25
0.02
0.3
0.65
3.5
1.5
200
50
0.003
65
80
0.3
180
160
165
290
165
1
5
2.5
300
150
mA
mA
%
dB
dB
%
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
0.07
1.5
%/V
%
%
mA
1.20
1.25
1.30
V
Conditions
T
J
= 25˚C, 3V
≤
(V
IN
− V
OUT
)
≤
40V, I
L
≤
20mA (Note 3)
T
J
= 25˚C, 5mA
≤
I
OUT
≤
I
MAX
, (Note 3)
T
J
= 25˚C, 10ms Pulse
Min
Typ
0.01
0.1
0.04
50
0.2
Max
0.04
0.5
0.2
100
5
Units
%/V
%
%/W
µA
µA
Note 1:
“Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.
Note 2:
Unless otherwise noted, these specifications apply: −25˚C
≤
T
j
≤
125˚C for the LM317L; V
IN
− V
OUT
= 5V and I
OUT
= 40 mA. Although power dissipation
is internally limited, these specifications are applicable for power dissipations up to 625 mW. I
MAX
is 100 mA.
Note 3:
Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are cov-
ered under the specification for thermal regulation.
Note 4:
Thermal resistance of the TO-92 package is 180˚C/W junction to ambient with 0.4" leads from a PC board and 160˚C/W junction to ambient with 0.125" lead
length to PC board.
3
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