LT3579EUFD-1#PBF

Overview

The LT3579EUFD-1#PBF is a high-performance switching regulator IC manufactured by Analog Devices Inc. It integrates a boost converter, inverting DC/DC converter, and charge pump to provide flexible power conversion options. The device supports an input voltage range from 2.5V to 16V and delivers up to 6A of switch current. It features adjustable output voltages ranging from 1.215V to 42V with a switching frequency between 200kHz and 2.5MHz. Packaged in a 20-WFQFN (4x5) exposed pad for efficient thermal dissipation, it operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Integrates multiple topologies including boost, inverting, Cuk, flyback, SEPIC, and charge pump functions within a single package.
• Supports wide input voltage ranges from 2.5V to 16V with high current capability up to 6A.
• Features adjustable switching frequencies from 200kHz to 2.5MHz to optimize efficiency and component size.
• Includes comprehensive protection mechanisms such as fault protection and soft-start functionality.

Applications

• Industrial systems requiring isolated or inverted power rails
• Battery-powered devices needing step-up conversion
• Automotive electronics with variable input sources
• Telecommunications equipment requiring flexible DC/DC conversion

Procurement Notes

Verify the exact suffix and tape/reel specifications against the manufacturer's latest datasheet before ordering. Confirm that the 20-WFQFN package dimensions match your PCB footprint requirements. Ensure compatibility with the intended switching frequency range for your specific filter design. Check for any recent lifecycle status updates or obsolescence notices directly from Analog Devices.

Selection Notes

Select this component when a single IC must handle multiple conversion topologies such as boost and inversion. Consider the 6A current rating for applications demanding high power density. Evaluate the thermal performance of the exposed pad layout for heat dissipation. Compare the 200kHz to 2.5MHz frequency range against EMI constraints and inductor size requirements.

Part Context

This part belongs to the LT3579 family of multi-topology switching regulators. It shares core architecture with variants like the LT3579IFE-1 but differs in package type and temperature grade. The EUFD suffix indicates a specific industrial temperature range and QFN packaging configuration suitable for surface mount assembly.

Replacement Considerations

LT3579IUFD#PBF: Similar topology and pinout but verify temperature range and suffix differences.

FAQ

What topologies are supported by the LT3579EUFD-1#PBF?

It supports boost, inverting, Cuk, flyback, SEPIC, and charge pump configurations.

What is the maximum switch current rating?

The device provides up to 6A of switch current capability.