LDFPT-TR

Overview

The LDFPT-TR is a positive adjustable linear voltage regulator from STMicroelectronics, delivering up to 1 A output current. It operates with an input voltage range of 2.6 V to 16 V and provides an adjustable output voltage between 0.8 V and 12 V. The device features a maximum dropout voltage of 0.5 V at full load and maintains a typical load regulation of 0.6%/A. It is housed in a compact PPAK surface-mount package and supports operation across a junction temperature range of -40 °C to +125 °C.

Feature Summary

• Adjustable output voltage capability within specified limits
• High current delivery of 1 A for demanding loads
• Low dropout performance for efficient power management
• Robust thermal protection and wide operating temperature range

Applications

• Battery-powered portable devices requiring efficient voltage regulation
• Embedded systems with variable input supply voltages
• Industrial control modules needing stable low-noise power rails
• Consumer electronics utilizing surface-mount assembly processes

Procurement Notes

Verify the specific output voltage configuration required, as this part offers adjustable output rather than fixed values. Confirm that the PPAK package footprint matches your PCB design constraints. Ensure input voltage sources remain within the 16 V maximum limit to prevent device damage. Check for RoHS compliance documentation if environmental regulations apply to your manufacturing process.

Selection Notes

Choose this component when a single-output adjustable regulator is needed with high current capacity. It is suitable for designs where space is limited due to its small PPAK form factor. Consider the dropout voltage characteristics relative to your minimum input voltage requirements. Evaluate thermal dissipation needs based on the expected load current and ambient temperature conditions.

Part Context

This regulator belongs to the LDF series of low-dropout linear regulators from STMicroelectronics. The series includes various fixed and adjustable voltage options packaged in different surface-mount formats. The LDFPT-TR specifically targets applications requiring adjustable outputs in a compact footprint, distinguishing it from fixed-voltage variants like the LDF33PT-TR.

Replacement Considerations

Direct substitutes may include other 1 A adjustable LDOs in similar packages from manufacturers such as Texas Instruments or NXP. Verify pin compatibility and electrical specifications before substitution. Fixed voltage alternatives require additional circuit adjustments if the system does not support adjustable inputs.