LM137 datasheet(2/12 Pages) NSC

2 / 12 page

Absolute Maximum Ratings (Notes 1,

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

j = 25˚C, 3V

≤ |V

IN −VOUT|

≤ 40V

0.01

0.02

0.01

0.04

%/V

(Note 2) I

L =10mA

Load Regulation

j = 25˚C, 10 mA

≤ I

OUT

≤ I

MAX

0.3

0.5

0.3

1.0

Thermal Regulation

j = 25˚C, 10 ms Pulse

0.002

0.02

0.003

0.04

%/W

Adjustment Pin Current

100

µA

Adjustment Pin Current Charge

10 mA

≤ I

MAX

µA

3.0V

≤ |V

IN −VOUT|

≤ 40V,

A = 25˚C

Reference Voltage

j = 25˚C (Note 3)

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

≤ |V

IN −VOUT|

≤ 40V, (Note 3)

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

10 mA

≤ I

OUT

≤ I

MAX,P

≤ P

MAX

Line Regulation

≤ |V

IN −VOUT|

≤ 40V, (Note 2)

0.02

0.05

0.02

0.07

%/V

Load Regulation

10 mA

≤ I

OUT

≤ I

MAX, (Note 2)

0.3

1.5

Temperature Stability

MIN

≤ T

MAX

0.6

Minimum Load Current

IN −VOUT|

≤ 40V

2.5

IN −VOUT|

≤ 10V

1.2

1.5

Current Limit

IN −VOUT|

≤ 15V

K, MP and T Package

1.5

2.2

3.5

1.5

2.2

3.7

H Package

0.5

0.8

1.8

0.5

0.8

1.9

IN −VOUT| = 40V, Tj = 25˚C

K, MP and T Package

0.24

0.4

0.15

0.4

H Package

0.15

0.17

0.10

0.17

RMS Output Noise, % of V

OUT

j = 25˚C, 10 Hz

≤ f ≤ 10 kHz

0.003

Ripple Rejection Ratio

OUT = −10V, f = 120 Hz

ADJ =10µF

Long-Term Stability

j = 125˚C, 1000 Hours

0.3

Thermal Resistance, Junction to

Case

H Package

˚C/W

K Package

2.3

˚C/W

T Package

˚C/W

Thermal Resistance, Junction to

Ambient (No Heat Sink)

H Package

140

˚C/W

K Package

˚C/W

T Package

MP Package

170

˚C/W

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

≤ Tj ≤ +150˚C for the LM137, 0˚C ≤ Tj ≤ +125˚C for the LM337; VIN −VOUT = 5V; and IOUT

= 0.1A for the TO-39 package and IOUT = 0.5A for the TO-3, SOT-223 and TO-220 packages. Although power dissipation is internally limited, these specifications

are applicable for power dissipations of 2W for the TO-39 and SOT-223 (see Application Hints), and 20W for the TO-3, and TO-220. IMAX is 1.5A for the TO-3,

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

covered under the specification for thermal regulation. Load regulation is measured on the output pin at a point 1⁄8" below the base of the TO-3 and TO-39 packages.

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

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