LD1117ADT18TR

Overview

The LD1117ADT18TR is a fixed-output low-dropout linear regulator manufactured by STMicroelectronics, delivering a precise 1.8V output at up to 1A load current. It operates within an input voltage range of 2.5V to 15V and utilizes the DPAK (TO-252) surface-mount package for efficient thermal dissipation. The device incorporates internal current limiting and thermal shutdown protection mechanisms to ensure operational reliability under fault conditions.

Feature Summary

• Provides stable regulated power with minimal voltage drop across the pass element
• Integrates comprehensive safety features including overcurrent and thermal shutdown protection

Applications

• Portable battery-powered equipment requiring efficient voltage regulation
• Embedded systems utilizing microcontrollers and digital logic circuits
• General-purpose power supply architectures in consumer electronics

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm that the received units match the specific LD1117ADT18TR designation and packaging format. Review the official datasheet for detailed handling precautions and storage requirements to maintain component integrity prior to assembly.

Selection Notes

Select this component when a fixed 1.8V rail is required with high current capability in a compact surface-mount form factor. Ensure the input voltage remains within the specified limits to prevent excessive power dissipation. Evaluate thermal management strategies based on the expected load current and ambient operating temperature conditions.

Part Context

This part belongs to the LD1117 series of positive low-dropout regulators designed for applications demanding good line and load regulation. The 'DT' suffix indicates the TO-252 (DPAK) package variant, while '18' specifies the fixed 1.8V output voltage option within the broader product family.