LT3431EFE#TRPBF

Overview

The LT3431EFE#TRPBF is a monolithic step-down DC/DC switching converter manufactured by Analog Devices Inc. It utilizes the LT3431 integrated circuit to provide high-voltage buck conversion capabilities. The device operates with an input voltage range of 7.5V to 20V and delivers a fixed 5V output at up to 2A load current. Designed for steady-state applications, it features a switching frequency of 500kHz and employs a Buck topology. This component is packaged in a TSSOP-EP-16 format suitable for surface mount assembly.

Feature Summary

• Monolithic step-down DC/DC switching converter architecture
• Optimized for 5V output at up to 2A load current
• Operates within a steady state input voltage range of 7.5V to 20V
• Utilizes the LT3431 integrated circuit core

Applications

• Evaluation board development using the LT3431 IC
• High voltage step-down power supply circuits
• Buck regulator design for industrial or commercial electronics

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging versus other variants like PBF. Confirm availability status as some distributors list this part as discontinued or limited stock. Ensure the TSSOP-EP-16 package matches your PCB footprint requirements. Cross-reference the manufacturer datasheet for thermal performance and electrical characteristics before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 5V output from a 7.5V to 20V input source is required. Consider the 500kHz switching frequency for inductor size trade-offs. Evaluate the 2A continuous current capability against peak load demands. Verify compatibility with the LT3431 evaluation board DC549A for rapid prototyping and validation of the design specifications.

Part Context

This part belongs to the LT3431 series of high-voltage buck converters from Analog Devices. It is often associated with the DC549A demonstration circuit designed to showcase its performance. The component serves as a core power management solution for applications requiring efficient voltage reduction from moderate input voltages to standard logic levels.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Analog Devices resources for direct replacements or pin-compatible alternatives if this specific variant is unavailable.