LM238K

Description：IC REG LINEAR POS ADJ 5A TO3
Series：-
Mfr：STMicroelectronics
Package：Bag

SKU:203d3c76a572 Category: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Brand: STMicroelectronics

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：IC REG LINEAR POS ADJ 5A TO3
Series：-
Mfr：STMicroelectronics
Package：Bag
Output Configuration：Positive
Output Type：Adjustable
Number of Regulators：1
Voltage - Input (Max)：35V
Voltage - Output (Min/Fixed)：1.2V
Voltage - Output (Max)：32V
Voltage Dropout (Max)：-
Current - Output：5A
Current - Quiescent (Iq)：-
Current - Supply (Max)：-
PSRR：75dB ~ 60dB (120Hz)
Control Features：-
Protection Features：Over Current, Over Temperature
Operating Temperature：-25°C ~ 150°C
Mounting Type：Through Hole
Package / Case：TO-204AA, TO-3
Supplier Device Package：TO-3
Grade：-
Qualification：-

Download product information

LM238K

Overview

The LM238K is a three-terminal adjustable positive voltage regulator from STMicroelectronics, capable of delivering a guaranteed continuous output current of 5 A. It supports an output voltage range from 1.2 V to 32 V and features a typical line regulation of 0.005% per volt and load regulation of 0.1%. The device includes internal current limiting that remains constant with temperature and guarantees thermal regulation. Designed for robust performance comparable to commercial power supplies, it requires only two external resistors to set the output voltage.

Feature Summary

Adjustable output voltage capability ranging from 1.2 V to 32 V
Guaranteed 5 A continuous output current with 7 A peak capability
Internal current limiting that remains constant across temperature variations
Standard three-lead transistor package for easy integration

Applications

High-current linear power supply designs
Adjustable voltage regulation in industrial equipment
Power management systems requiring stable output under varying loads

Procurement Notes

Verify the specific suffix K indicates the standard three-lead transistor package variant when sourcing. Confirm the component status as active or obsolete through official STMicroelectronics channels prior to procurement. Ensure compatibility with heat dissipation requirements given the 5 A current rating. Cross-reference datasheet revisions to confirm electrical characteristics match design specifications.

Selection Notes

Select the LM238K for applications requiring high current handling with adjustable voltage output. Consider its thermal regulation and constant current limiting features for robust protection. Evaluate the need for external heat sinking due to power dissipation at 5 A. Compare against fixed regulators if voltage flexibility is not required.

Part Context

The LM238 belongs to the LM138/LM238/LM338 family of three-terminal adjustable positive voltage regulators. These devices are designed for ease of use, requiring minimal external components. The family offers outstanding load and line regulation, making them suitable for demanding power supply applications where stability and reliability are critical.