LDFMPT-TR

Overview

The LDFMPT-TR is a linear voltage regulator IC from STMicroelectronics, housed in a PPAK package. It provides a positive adjustable output voltage ranging from 0.8 V to 12 V. The device supports a maximum output current of 500 mA with a typical dropout voltage of 125 mV. Key electrical specifications include a line regulation of 0.04%/V and load regulation of 0.4%/A. It features a quiescent current of 200 µA and a power supply rejection ratio (PSRR) of 60 dB. The unit operates with a maximum input voltage of 16 V and maintains an accuracy of 1%.

Feature Summary

• Offers high output precision for stable voltage regulation
• Features very low dropout voltage for efficient operation
• Provides low quiescent current to minimize power consumption

Applications

• Battery-powered portable electronics
• Embedded systems requiring stable logic supplies
• Consumer devices needing efficient power management

Procurement Notes

Verify the specific datasheet revision and ordering code suffixes to ensure compatibility with your design requirements. Confirm that the PPAK package dimensions align with your PCB footprint constraints. Check for any updated thermal derating curves or application notes relevant to your operating conditions. Ensure compliance with RoHS directives if required by your manufacturing standards. Cross-reference the part number with official STMicroelectronics distributors to avoid counterfeit components.

Selection Notes

Select this component when a compact surface-mount solution is needed for adjustable voltage regulation. Consider its low dropout characteristic for applications where the input-to-output voltage differential is minimal. Evaluate the 500 mA current capability against your peak load requirements. Assess the thermal performance within the PPAK package for your specific ambient temperature conditions. Compare the PSRR and noise specifications against sensitive analog circuitry requirements.

Part Context

This part belongs to the LDFM series of low-dropout regulators designed for space-constrained applications. It integrates protection features common to modern linear regulators. The PPAK package offers a small form factor suitable for dense PCB layouts. It complements other power management solutions in ST's portfolio for complete system power architectures.

Replacement Considerations

Consult official STMicroelectronics documentation for direct pin-compatible substitutes. Verify equivalent electrical parameters such as output current and dropout voltage before substitution. Ensure thermal characteristics match the original design constraints.