LM138K STEEL

$88.17

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

SKU:40ebd3be20ad 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)：32V
Voltage Dropout (Max)：-
Current - Output：5A
Current - Quiescent (Iq)：-
Current - Supply (Max)：-
PSRR：75dB (120Hz)
Control Features：-
Protection Features：Over Temperature
Operating Temperature：-55°C ~ 150°C
Mounting Type：Through Hole
Package / Case：TO-204AA, TO-3
Supplier Device Package：TO-3-2
Grade：-
Qualification：-

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LM138K STEEL

Overview

The LM138K STEEL is a high-current adjustable linear voltage regulator manufactured by Texas Instruments. It provides an output current of 5 A with an adjustable output voltage range from 1.2 V to 32 V. The device operates within an input voltage range of 4.2 V to 40 V and features a line regulation of 0.01 %/V and load regulation of 0.3 %. Designed for through-hole mounting in a TO-3-2 package, it supports a maximum power dissipation of 50 W. The component functions reliably across a temperature range of -55 °C to +125 °C.

Feature Summary

Delivers up to 5 A of continuous output current for demanding power applications
Provides precise voltage regulation with low line and load regulation specifications
Includes built-in thermal overload protection and internal current limiting mechanisms

Applications

High-power industrial equipment power supplies
Battery charging systems requiring adjustable voltage levels
Test and measurement instrumentation power sources

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to ensure correct package type and performance grade. Confirm that the requested part matches the exact electrical parameters required for the design. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a robust, high-current linear solution is needed for adjustable voltage applications. Ensure the system can accommodate the thermal requirements associated with the TO-3 package and 50 W power dissipation capability. Verify that the input voltage remains within the specified limits to maintain stable operation and protect the regulator from damage under all expected operating conditions.

Part Context

This component belongs to the LM138 series of positive adjustable linear regulators produced by Texas Instruments. It shares functional similarities with other members of the family but is distinguished by its steel TO-3 package construction. This specific variant is designed for applications requiring high current handling and rugged mechanical durability compared to plastic-packaged alternatives.