LD29150PT50R

Overview

The LD29150PT50R is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 5.0 V output with a maximum continuous current of 1.5 A. The device features a typical dropout voltage of 400 mV at full load and includes internal protection mechanisms such as thermal shutdown and current limiting. It is housed in a surface-mount PPAK-5 package, suitable for space-constrained applications requiring high accuracy and low ground current consumption.

Feature Summary

• Fixed 5.0 V output voltage with ±1% accuracy
• High current capability up to 1.5 A
• Very low dropout voltage characteristic
• Integrated thermal and current protection

Applications

• Post-regulation for switching power supplies
• Battery-powered systems requiring low quiescent current
• Series power supplies for monitors and TVs
• Computer system peripheral power regulation

Procurement Notes

Verify the specific suffix 'PT50R' confirms the 5.0 V fixed output and reel packaging configuration. Ensure compatibility with the PPAK-5 footprint during PCB layout. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the manufacturer part number directly with official STMicroelectronics documentation to avoid counterfeit components.

Selection Notes

Select this component when a fixed 5.0 V rail is required with high current drive capabilities. The low dropout characteristic makes it suitable for input voltages close to the output level. Consider the thermal performance of the PPAK-5 package under maximum load conditions. This regulator is preferred over adjustable variants when circuit complexity needs to be minimized for fixed voltage applications.

Part Context

This part belongs to the LD29150 series of high-current, very low drop voltage regulators from STMicroelectronics. The series offers both fixed and adjustable output options. The PT50R designation specifically indicates the 5.0 V fixed version in tape-and-reel packaging. The series is designed for applications demanding high accuracy and efficient power management in compact form factors.

Replacement Considerations

Direct substitutes within the same family include LD29150DT50R (TO-252 package) for pin-compatible board revisions. Other fixed 5.0 V LDOs with similar current ratings may require external component adjustments. Verify thermal dissipation requirements when replacing with packages having different thermal resistance characteristics.