LM138K-MIL

Description：IC REG LINEAR POS ADJ 5A TO3-2
Series：-
Mfr：Texas Instruments
Package：Tray

SKU:048d873ff7e7 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC REG LINEAR POS ADJ 5A TO3-2
Series：-
Mfr：Texas Instruments
Package：Tray
Output Configuration：Positive
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：40V
Voltage - Output (Min/Fixed)：1.2V
Voltage - Output (Max)：35V
Voltage Dropout (Max)：-
Current - Output：5A
Current - Quiescent (Iq)：5 mA
Current - Supply (Max)：-
PSRR：-
Control Features：-
Protection Features：Over Current, Over Temperature, Short Circuit
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Through Hole
Package / Case：TO-204AA, TO-3
Supplier Device Package：TO-3-2
Grade：-
Qualification：-

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LM138K-MIL

Overview

The LM138K-MIL is a military-grade, three-terminal adjustable linear voltage regulator manufactured by Texas Instruments. It provides an output current of up to 5 A with an adjustable output voltage range from 1.2 V to 32 V. The device operates within an extended temperature range of -55°C to +125°C and features internal current limiting, thermal overload protection, and safe area compensation. It utilizes a TO-3 metal can package designed for high power dissipation applications requiring robust performance in harsh environments.

Feature Summary

Military-grade reliability with extended temperature operation
Internal current limiting and thermal overload protection
Safe area compensation for stable high-power regulation

Applications

Military avionics power systems
Ruggedized industrial equipment
High-reliability aerospace electronics

Procurement Notes

Verify the specific revision level and lot traceability documentation when sourcing this component. Ensure that the procurement channel provides valid certification for military-grade specifications. Confirm that the TO-3 package integrity meets the required environmental sealing standards for the intended deployment environment.

Selection Notes

Select this regulator for designs requiring high current capability under extreme thermal conditions. The TO-3 package facilitates effective heat sinking for high power dissipation scenarios. Consider the input-output voltage differential to manage thermal load effectively within the specified operating temperature range.

Part Context

This component belongs to the LM138/LM338 family of five-ampere adjustable regulators. It shares functional similarities with commercial variants but adheres to stricter manufacturing controls and testing protocols defined for military applications. The device serves as a robust solution for stabilizing power supplies in critical infrastructure.