LT3579EUFD#PBF

Overview

The LT3579EUFD#PBF is a high-performance switching regulator IC manufactured by Analog Devices Inc. It supports multiple topologies including boost, inverting, Cuk, flyback, and SEPIC configurations. The device features an integrated 6A switch capable of handling input voltages from 2.5V to 16V and generating output voltages up to 42V. It operates with a programmable switching frequency ranging from 200kHz to 2.5MHz. The component provides a fixed minimum output voltage of 1.215V and is housed in a 20-lead WFQFN package with an exposed pad.

Feature Summary

• Supports versatile DC-DC conversion topologies including boost, inverting, Cuk, flyback, and SEPIC within a single monolithic package.
• Integrates a high-current 6A power switch for efficient energy transfer in demanding power applications.
• Features adjustable switching frequency control to optimize performance across various load and size requirements.

Applications

• Industrial systems requiring flexible voltage conversion
• Automotive electronics utilizing diverse power rails
• Portable equipment needing compact power solutions

Procurement Notes

Verify the specific suffix EUFD against official Analog Devices documentation to confirm the package type and temperature rating. Ensure compatibility with your PCB footprint design for the 20-WFQFN exposed pad configuration. Cross-reference the datasheet revision date to confirm current manufacturing status and any potential lifecycle changes before finalizing procurement plans.

Selection Notes

Select this component when a single IC must handle multiple non-standard converter topologies without external discrete switches. The 6A internal switch capability reduces bill of materials complexity compared to controller-based designs. Consider the thermal performance of the QFN package relative to your expected continuous current loads and ambient operating conditions.

Part Context

This part belongs to the LT3579 family of multi-topology switching regulators. It shares core architecture with variants like LT3579IFE and LT3579IUFD, differing primarily in package style and industrial temperature specifications. The series is designed to simplify power supply design by consolidating multiple converter functions into one chip.

Replacement Considerations

Direct substitutes include LT3579IFE#PBF and LT3579IUFD#PBF. Verify that the alternative suffix matches your required operating temperature range and physical package dimensions. Ensure pinout compatibility remains identical to avoid PCB redesign efforts during replacement.