LM317LM datasheet(3/17 Pages) NSC

3 / 17 page

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

−40˚C to +125˚C

Storage Temperature

−55˚C to +150˚C

Lead Temperature

(Soldering, 4 seconds)

260˚C

Output is Short Circuit Protected

ESD rating to be determined.

Electrical Characteristics (Note 2)

Parameter

Conditions

Min

Typ

Max

Units

Line Regulation

J = 25˚C, 3V ≤ (VIN −VOUT) ≤ 40V, IL ≤ 20mA (Note 3)

0.01

0.04

%/V

Load Regulation

J = 25˚C, 5mA ≤ IOUT ≤ IMAX, (Note 3)

0.1

0.5

Thermal Regulation

J = 25˚C, 10ms Pulse

0.04

0.2

%/W

Adjustment Pin Current

100

µA

Adjustment Pin Current

5mA

≤ I

L ≤ 100mA

0.2

µA

Change

≤ (V

IN −VOUT) ≤ 40V, P ≤ 625mW

Reference Voltage

≤ (V

IN −VOUT) ≤ 40V, (Note 4)

1.20

1.25

1.30

5mA

≤ I

OUT ≤ 100mA, P ≤ 625mW

Line Regulation

≤ (V

IN −VOUT) ≤ 40V, IL ≤ 20mA (Note 3)

0.02

0.07

%/V

Load Regulation

5mA

≤ I

OUT ≤ 100mA, (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

1.5

2.5

Current Limit

≤ (V

IN −VOUT) ≤ 13V

100

200

300

IN −VOUT) = 40V

150

Rms Output Noise, % of V

OUT

J = 25˚C, 10Hz ≤ f ≤ 10kHz

0.003

Ripple Rejection Ratio

OUT = 10V, f = 120Hz, CADJ = 0

ADJ = 10µF

Long-Term Stability

J = 125˚C, 1000 Hours

0.3

Thermal Resistance

Z Package 0.4" Leads

180

˚C/W

Junction to Ambient

Z Package 0.125 Leads

160

˚C/W

SO-8 Package

165

˚C/W

6-Bump micro SMD

290

˚C/W

Thermal Rating of SO

Package

165

˚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

functional, but do not guarantee specific performance limits.

Note 2: Unless otherwise noted, these specifications apply: −25˚C

≤ Tj ≤ 125˚C for the LM317L; VIN −VOUT = 5V and IOUT = 40 mA. Although power dissipation

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.

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