Electrical Characteristics (Note 3)

Specifications with standard type face are for T

ture Range. Unless otherwise specified, V

Parameter

Conditions

LM317A

LM317

Units

Min

Typ

Max

Min

Typ

Max

Reference Voltage

1.238

1.250

1.262

V

3V

≤ (V

≤ 40V,

1.225

1.250

1.270

1.20

1.25

1.30

V

10 mA

≤ I

OUT

≤ I

≤ P

MAX

Line Regulation

3V

≤ (V

≤ 40V (Note 4)

0.005

0.01

0.01

0.04

%/V

0.01

0.02

0.02

0.07

%/V

Load Regulation

10 mA

≤ I

OUT

≤ I

MAX (Note 4)

0.1

0.5

0.1

0.5

%

0.3

1

0.3

1.5

%

Thermal Regulation

20 ms Pulse

0.04

0.07

0.04

0.07

%/W

Adjustment Pin Current

50

100

50

100

µA

Adjustment Pin Current

Change

10 mA

≤ I

OUT

≤ I

MAX

0.2

5

0.2

5

µA

3V

≤ (V

≤ 40V

Temperature Stability

T

MIN

≤ T

J

≤ T

MAX

11

%

Minimum Load Current

(V

3.5

10

3.5

10

mA

Current Limit

(V

≤ 15V

K, T, S Packages

1.5

2.2

3.4

1.5

2.2

3.4

A

H Package

MP Package

0.5

1.5

0.8

2.2

1.8

3.4

0.5

1.5

0.8

2.2

1.8

3.4

A

A

(V

K, T, S Packages

0.15

0.4

0.15

0.4

A

H Package

MP Package

0.075

0.15

0.2

0.4

0.075

0.15

0.2

0.4

A

A

RMS Output Noise, % of V

OUT

10 Hz

≤ f ≤ 10 kHz

0.003

0.003

%

Ripple Rejection Ratio

V

65

65

dB

C

V

66

80

66

80

dB

C

Long-Term Stability

T

0.3

1

0.3

1

%

Thermal Resistance,

Junction-to-Case

K Package

MDT Package

2.3

5

3

˚C/W

˚C/W

H Package

12

15

12

15

˚C/W

T Package

MP Package

4

23.5

54

23.5

˚C/W

˚C/W

Thermal Resistance,

Junction-to-Ambient (No Heat

Sink)

K Package

MDT Package(Note 6)

35

35

92

˚C/W

˚C/W

H Package

140

140

˚C/W

T Package

50

50

˚C/W

S Package (Note 6)

50

50

˚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: Although power dissipation is internally limited, these specifications are applicable for maximum power dissipations of 2W for the TO-39 and SOT-223 and

All limits (i.e., the numbers in the Min. and Max. columns) are guaranteed to National’s AOQL (Average Outgoing Quality Level).

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: If the TO-263 or TO-252 packages are used, the thermal resistance can be reduced by increasing the PC board copper area thermally connected to the

package. Using 0.5 square inches of copper area.

area,

heatsinking).

www.national.com

5