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If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Power Dissipation

Internally Limited

Input-Output Voltage Differential

40V

Operating Junction Temperature

Range

LM137

−55˚C to +150˚C

LM337

0˚C to +125˚C

LM337I

−40˚C to +125˚C

Storage Temperature

−65˚C to +150˚C

Lead Temperature (Soldering, 10 sec.)

300˚C

Plastic Package (Soldering, 4 sec.)

260˚C

ESD Rating

2k Volts

Electrical Characteristics (Note 1)

Parameter

Conditions

LM137

LM337

Units

Min

Typ

Max

Min

Typ

Max

Line Regulation

T

≤ |V

≤ 40V

0.01

0.02

0.01

0.04

%/V

(Note 2) I

Load Regulation

T

≤ I

OUT

≤ I

MAX

0.3

0.5

0.3

1.0

%

Thermal Regulation

T

0.002

0.02

0.003

0.04

%/W

Adjustment Pin Current

65

100

65

100

µA

Adjustment Pin Current Charge

10 mA

≤ I

L

≤ I

MAX

25

25

µA

3.0V

≤ |V

≤ 40V,

T

Reference Voltage

T

−1.225 −1.250 −1.275 −1.213 −1.250 −1.287

V

3V

≤ |V

≤ 40V, (Note 3)

−1.200 −1.250 −1.300 −1.200 −1.250 −1.300

V

10 mA

≤ I

OUT

≤ I

≤ P

MAX

Line Regulation

3V

≤ |V

≤ 40V, (Note 2)

0.02

0.05

0.02

0.07

%/V

Load Regulation

10 mA

≤ I

OUT

≤ I

0.3

1

0.3

1.5

%

Temperature Stability

T

MIN

≤ T

j

≤ T

MAX

0.6

0.6

%

Minimum Load Current

|V

≤ 40V

2.5

5

2.5

10

mA

|V

≤ 10V

1.2

3

1.5

6

mA

Current Limit

|V

≤ 15V

K, MP and T Package

1.5

2.2

3.5

1.5

2.2

3.7

A

H Package

0.5

0.8

1.8

0.5

0.8

1.9

A

|V

K, MP and T Package

0.24

0.4

0.15

0.4

A

H Package

0.15

0.17

0.10

0.17

A

RMS Output Noise, % of V

OUT

T

≤ f ≤ 10 kHz

0.003

0.003

%

Ripple Rejection Ratio

V

60

60

dB

C

66

77

66

77

dB

Long-Term Stability

T

0.3

1

0.3

1

%

Thermal Resistance, Junction to

Case

H Package

12

15

12

15

˚C/W

K Package

2.3

3

2.3

3

˚C/W

T Package

4

˚C/W

Thermal Resistance, Junction to

Ambient (No Heat Sink)

H Package

140

140

˚C/W

K Package

35

35

˚C/W

T Package

MP Package

50

170

˚C/W

˚C/W

Note 1: Unless otherwise specified, these specifications apply −55˚C

SOT-223 and TO-220 packages, and 0.2A for the TO-39 package.

Note 2: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are

Note 3: Selected devices with tightened tolerance reference voltage available.

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