LM337L datasheet(2/5 Pages) NSC

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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

Internally Limited

Input–Output Voltage Differential

40V

Operating Junction

Temperature Range

−25˚C to +125˚C

Storage Temperature

−55˚C to +150˚C

Lead Temperature

(Soldering, 10 sec.)

300˚C

Plastic Package (Soldering 4 sec.)

260˚C

ESD rating to be determined.

Electrical Characteristics (Note 2)

Parameter

Conditions

Min

Typ

Max

Units

Line Regulation

A = 25˚C, 3V ≤ |VIN −VOUT| ≤ 40V,

0.01

0.04

%/V

(Note 3)

Load Regulation

A = 25˚C, 5 mA ≤ IOUT ≤ IMAX, (Note 3)

0.1

0.5

Thermal Regulation

A = 25˚C, 10 ms Pulse

0.04

0.2

%/W

Adjustment Pin Current

100

µA

Adjustment Pin Current Change

5 mA

≤ I

L ≤ 100 mA

0.2

µA

≤ |V

IN −VOUT| ≤ 40V

Reference Voltage

≤ |V

IN −VOUT| ≤ 40V, (Note 4)

1.20

1.25

1.30

10 mA

≤ I

OUT ≤ 100 mA, P ≤ 625 mW

Line Regulation

≤ |V

IN −VOUT| ≤ 40V, (Note 3)

0.02

0.07

%/V

Load Regulation

5 mA

≤ I

OUT ≤ 100 mA, (Note 3)

0.3

1.5

Temperature Stability

MIN ≤ Tj ≤ TMAX

0.65

Minimum Load Current

IN −VOUT| ≤ 40V

3.5

≤ |V

IN −VOUT| ≤ 15V

2.2

3.5

Current Limit

≤ |V

IN −VOUT| ≤ 13V

100

200

320

IN −VOUT| = 40V

120

Rms Output Noise, % of V

OUT

A = 25˚C, 10 Hz ≤ f ≤ 10 kHz

0.003

Ripple Rejection Ratio

OUT = −10V, F = 120 Hz, CADJ = 065

ADJ = 10 µF

Long-Term Stability

A = 125˚C

0.3

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 specified, these specifications apply −25˚C

≤ Tj ≤ + 125˚C for the LM337L; |VIN −VOUT| = 5V and IOUT = 40 mA. Although power dissi-

pation is internally limited, these specifications are applicable for power dissipations up to 625 mW. IMAX 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. The M package

θJA is 180˚C/W in still air.

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