LD1084D2M33R

Overview

The LD1084D2M33R is a fixed-output positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3V output with a maximum continuous current capability of 5A. The device operates within an input voltage range up to 30V and features a typical dropout voltage of 1.5V at full load. It incorporates internal thermal overload and short-circuit protection mechanisms. The component is housed in a D2PAK-3 surface-mount package, suitable for automated assembly via tape and reel packaging.

Feature Summary

• Fixed 3.3V output configuration
• High current delivery up to 5A
• Integrated thermal and short-circuit protection

Applications

• Point-of-load regulation for digital logic circuits
• Power supply stages for embedded microcontrollers
• Biasing applications for RF modules

Procurement Notes

Verify the specific suffix 'R' indicates tape-and-reel packaging rather than tube. Confirm the manufacturer status as discontinued or active through official ST channels before finalizing design-in decisions. Ensure compatibility with the D2PAK-3 footprint during PCB layout.

Selection Notes

Select this component when a fixed 3.3V rail is required with high current capacity. The D2PAK-3 package offers robust thermal performance compared to smaller SOT packages. Verify that the input voltage does not exceed the 30V absolute maximum rating under all operating conditions.

Part Context

This part belongs to the LD1084 series of low-dropout regulators from STMicroelectronics. The series includes various fixed output voltages and packaging options. The 'D2M' designation typically refers to the D2PAK (TO-263) package family, while 'R' denotes the reel packaging format.

Replacement Considerations

Check for direct pin-compatible alternatives within the same LD1084 family, such as LD1084D2M33. Verify if newer generations offer improved thermal characteristics or availability.