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LM317A and LM317 Electrical Characteristics
(Note 3)
Specifications with standard type face are for T
J
= 25°C, and those with
boldface type
apply over
full Operating Temperature
Range
. Unless otherwise specified, V
IN
V
OUT
= 5V, and I
OUT
= 10 mA.
Parameter
Conditions
LM317A
Typ
1.250
LM317
Typ
1.25
Min
1.238
Max
1.262
Min
-
Max
-
Units
V
Reference Voltage
3V
≤
(V
IN
V
OUT
)
≤
40V,
10 mA
≤
I
OUT
≤
I
MAX
1.225
1.250
1.270
1.20
1.25
1.30
V
Line Regulation
3V
≤
(V
IN
V
OUT
)
≤
40V (Note 4)
0.005
0.01
0.1
0.3
0.04
50
0.01
0.02
0.5
1
0.07
100
0.01
0.02
0.1
0.3
0.04
50
0.04
0.07
0.5
1.5
0.07
100
%/V
Load Regulation
10 mA
≤
I
OUT
≤
I
MAX
(Note 4)
%
Thermal Regulation
Adjustment Pin Current
20 ms Pulse
10 mA
≤
I
OUT
≤
I
MAX
3V
≤
(V
IN
V
OUT
)
≤
40V
T
MIN
≤
T
J
≤
T
MAX
(V
IN
V
OUT
) = 40V
(V
IN
V
OUT
)
≤
15V
K, T, S Packages
EMP Package
H, MDT Packages
(V
IN
V
OUT
) = 40V
K, T, S Packages
EMP Package
H, MDT Packages
10 Hz
≤
f
≤
10 kHz
V
OUT
= 10V, f = 120 Hz, C
ADJ
= 0 μ
F
V
OUT
= 10V, f = 120 Hz, C
ADJ
= 10 μ
F
T
J
= 125°C, 1000 hrs
K (TO-3) Package
T (TO-220) Package
S (TO-263) Package
EMP (SOT-223) Package
H (TO-39) Package
MDT (TO-252) Package
K (TO-3) Package
T (TO-220) Package
S (TO-263) Package (Note 6)
EMP (SOT-223) Package (Note 6)
H (TO-39) Package
MDT (TO-252) Package (Note 6)
%/W
μ
A
Adjustment Pin Current Change
0.2
5
0.2
5
μ
A
Temperature Stability
1
1
%
Minimum Load Current
3.5
10
3.5
10
mA
Current Limit
-
-
-
1.5
0.5
-
0.112
0.075
2.2
0.8
-
0.30
0.20
3.4
1.8
1.5
1.5
0.5
0.15
0.112
0.075
2.2
2.2
0.8
0.40
0.30
0.20
3.4
3.4
1.8
A
A
RMS Output Noise, % of V
OUT
0.003
0.003
%
Ripple Rejection Ratio
65
65
dB
66
80
66
80
dB
Long-Term Stability
0.3
-
-
-
23.5
21
12
-
-
-
140
186
103
1
0.3
2
4
4
23.5
21
12
39
50
50
140
186
103
1
%
Thermal Resistance,
θ
JC
Junction-to-Case
°C/W
Thermal Resistance,
θ
JA
Junction-to-Ambient
(No Heat Sink)
°C/W
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
The guaranteed specifications apply only for the test conditions listed.
Note 2:
Refer to RETS117H drawing for the LM117H, or the RETS117K for the LM117K military specifications.
Note 3:
I
= 1.5A for the K (TO-3), T (TO-220), and S (TO-263) packages. I
= 1.0A for the EMP (SOT-223) package. I
= 0.5A for the H (TO-39), MDT
(TO-252), and E (LCC) packages. Device power dissipation (P
) is limited by ambient temperature (T
), device maximum junction temperature (T
), and package
thermal resistance (
θ
). The maximum allowable power dissipation at any temperature is : P
D(MAX)
= ((T
J(MAX)
- T
A
)/θ
JA
). All Min. and Max. limits are guaranteed
to National's Average Outgoing Quality Level (AOQL).
Note 4:
Regulation is measured at a constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects
are covered under the specifications for thermal regulation.
Note 5:
Human body model, 100 pF discharged through a 1.5 k
Ω
resistor.
Note 6:
When surface mount packages are used (TO-263, SOT-223, TO-252), the junction to ambient thermal resistance can be reduced by increasing the PC
board copper area that is thermally connected to the package. See the Applications Hints section for heatsink techniques.
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