LM217T

Overview

The LM217T is a monolithic positive adjustable voltage regulator manufactured by STMicroelectronics. It provides an output current exceeding 1.5 A with an adjustable output voltage range from 1.2 V to 37 V. The device features line regulation of 0.02 %/V and load regulation of 0.3 %. It operates within a temperature range of -25 °C to 150 °C and supports a maximum input voltage of 40 V. The component utilizes a TO-220 package with three pins for through-hole installation.

Feature Summary

• Provides over 1.5 A load current capability
• Output voltage adjustable via resistive divider
• Includes complete protection against current limiting, thermal shutdown, and safe operating area control

Applications

• Positive adjustable voltage regulation
• Local card regulation
• Battery chargers

Procurement Notes

Verify the specific ordering suffix to confirm the package type and tape/reel configuration. Ensure the selected variant matches the required thermal management and mounting constraints. Confirm RoHS compliance status and check for any recent production change notices that may affect pinout or material composition before finalizing procurement.

Selection Notes

Select this component when a high-current linear regulator with wide voltage adjustability is required. The TO-220 package facilitates heat dissipation for currents above 1.5 A. Consider the thermal resistance and ambient temperature conditions to ensure operation remains within the specified junction temperature limits under full load.

Part Context

The LM217T belongs to the LM217 series of positive adjustable regulators. This family includes variants in different packages such as TO-220FP and D2PAK. The series is designed to replace fixed regulators, reducing inventory requirements by allowing precise voltage setting through external resistors.

Replacement Considerations

LM317T serves as a functional equivalent within the same regulatory family.