LD1084D2M33

Overview

The LD1084D2M33 is a positive low-dropout voltage regulator from the STMicroelectronics LD1084 series, providing a fixed 3.3V output with a maximum current of 5A. It operates within an input voltage range up to 30V and maintains stability with a minimum dropout voltage of 1.3V at full load. The device features an output tolerance of ±1% at 25°C and ±2% across the full temperature range. It includes internal thermal limiting and short-circuit protection, functioning reliably in surface-mount D2PAK packages over an operating temperature range of -40°C to +125°C.

Feature Summary

• Provides high-efficiency regulation by directing quiescent current into the load rather than wasting it as heat.
• Features on-chip trimming for tight output voltage tolerance and guaranteed performance under extreme conditions.
• Incorporates built-in thermal overload and short-circuit protection mechanisms for enhanced circuit safety.

Applications

• SCSI-2 active termination circuits
• General-purpose power supply stages requiring stable 3.3V rails
• Embedded systems utilizing 5A current loads

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm package markings match the D2PAK specification and check for ECOPACK environmental compliance labels. Ensure ordering suffixes align with specific tape-and-reel or tube packaging requirements before finalizing procurement.

Selection Notes

Select this regulator when a fixed 3.3V rail is required with high current capability up to 5A. Consider the D2PAK package for its thermal dissipation advantages in space-constrained designs. Evaluate input-to-output voltage differentials to ensure operation remains within the specified dropout characteristics for optimal efficiency.

Part Context

This component belongs to the LD1084 series of 5A low-dropout positive voltage regulators. The series offers both adjustable and fixed output versions, designed to replace older three-terminal adjustable regulators while delivering superior dropout performance and tighter output tolerances. It serves as a robust solution for power management in industrial and consumer electronics.

Replacement Considerations

LD1084DT33