NSC LM140K-12-MLS, LM140K-12, LM140K-5.0-883, LM140K-5.0, LM140AK-5.0-883 Datasheet

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Original Creation Date: 05/10/95

Last Update Date: 02/17/97

Last Major Revision Date: 05/10/95

MJLM140-05-K REV 0B0

MICROCIRCUIT DATA SHEET

VOLTAGE REGULATOR, +5 VOLTS AT 1.0A

General Description

The LM140 monolithic 3-terminal positive voltage regulators employ internal current limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

NS Part Numbers

JL140-5BYA JL140-5SYA

Industry Part Number

LM140

Prime Die

LM140

Controlling Document

38510/10706 REV C

Processing

MIL-STD-883, Method 5004

Quality Conformance Inspection

MIL-STD-883, Method 5005

Subgrp Description Temp ( C)

1 Static tests at +25 2 Static tests at +125 3 Static tests at -55 4 Dynamic tests at +25 5 Dynamic tests at +125 6 Dynamic tests at -55 7 Functional tests at +25 8A Functional tests at +125 8B Functional tests at -55 9 Switching tests at +25 10 Switching tests at +125 11 Switching tests at -55

MICROCIRCUIT DATA SHEET

MJLM140-05-K REV 0B0

Features

- Complete specifications at 1A load

- Internal thermal overload protection

- Internal short-circuit current limit

- Output transistor safe area protection

MICROCIRCUIT DATA SHEET

MJLM140-05-K REV 0B0

(Absolute Maximum Ratings)

(Note 1)

DC Input Voltage

35V

Internal Power Dissipation

(Note 2)

Internally Limited

Maximum Junction Temperature

150 C

Storage Temperature Range

-65 C to +150 C

Lead Temperature

300 C(Soldering, 10 seconds)

ESD Susceptibility

(Note 3)

2kV

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur.

Operating Conditions are conditions under which the device functions but the specification might not be guaranteed. For guaranteed specifications and test conditions see the Electrical Characteristics.

Note 2: The maximum allowable power dissipation at any ambient temperature is a function of

the maximum junction temperature for operation (TjMAX = 150 C), the junction-to-ambient thermal resistance (ThetaJA), and the ambient temperature (TA). PDMAX = (TjMAX - TA)/ThetaJA. If this dissipation is exceeded, the die temperature will rise above TjMAX and the electrical specifications do not apply. If the die temperature rises above 150 C, the device will go into thermal shutdown. The junction-to-ambient thermal resistance (ThetaJA) is 39 C/W. When using a heatsink, ThetaJA is the sum of the 4 C/W junction-to-case thermal resistance (ThetaJC) and the case-to-ambient thermal resistance (ThetaCA) of the heatsink.

Note 3: Human body model, 100pF discharged through 1.5K Ohms

Recommended Operating Conditions

(Note 1)

Temperature Range (TA)

(Note 2)

-55 C to +125 C

Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur.

Note 2: The maximum allowable power dissipation at any ambient temperature is a function of

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