LD1086DT50TR

Overview

The LD1086DT50TR is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 5 V output with a maximum current capacity of 1.5 A. The device operates within an input voltage range of 3.4 V to 30 V and maintains a typical dropout voltage of 1.3 V at full load, reducing to 1.2 V under lighter conditions. Designed for surface-mount applications, it utilizes the TO-252-3 (DPAK) package configuration. The component ensures high efficiency as its quiescent current flows into the load rather than being wasted. It features internal thermal overload and short-circuit protection mechanisms.

Feature Summary

• Fixed 5 V output voltage with ±1% tolerance at 25 °C
• High-efficiency design where quiescent current supplies the load
• Integrated thermal shutdown and current limiting protection
• Requires only a minimum 10 μF output capacitor for stability

Applications

• General-purpose positive voltage regulation in electronic circuits
• Power supply stages requiring stable 5 V rails for digital logic
• Embedded systems utilizing the LD1086 family pinout compatibility

Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing components. Confirm the manufacturer is STMicroelectronics to ensure authenticity. Check for RoHS compliance status if environmental regulations apply to the assembly process. Ensure the receiving facility handles surface-mount devices according to moisture sensitivity level guidelines during storage and reflow soldering procedures.

Selection Notes

Select this component when a fixed 5 V rail is required with up to 1.5 A capability. It serves as a drop-in replacement for older three-terminal adjustable regulators due to pinout compatibility. Consider the TO-252-3 package for surface-mount board space constraints. Evaluate the thermal performance requirements given the internal power limit characteristics under varying ambient temperatures.

Part Context

This part belongs to the LD1086 series of low-dropout positive voltage regulators. The series offers both adjustable and fixed output versions in various packages including TO-220, D²PAK, and DFN8. The LD1086DT50TR specifically denotes the fixed 5 V variant in the DPAK surface-mount package, designed for efficient power management in compact electronic designs.

Replacement Considerations

The LD1086 series is pin-compatible with standard three-terminal adjustable regulators. Verify that substitute parts maintain the same 1.5 A current rating and 30 V maximum input voltage specifications to ensure circuit functionality without modification.