LT3579EFE-1#PBF

Overview

The LT3579EFE-1#PBF is a high-performance boost and inverting DC/DC converter manufactured by Analog Devices Inc. It integrates a 6A switch capable of handling input voltages from 2.5V to 16V. The device supports multiple topologies including boost, inverting, Cuk, SEPIC, and flyback configurations. It features an adjustable switching frequency ranging from 200kHz to 2.5MHz and provides an adjustable output voltage between 1.215V and 42V. Packaged in a 20-WFQFN exposed pad, it operates within a temperature range of -40°C to 125°C TJ.

Feature Summary

• Integrates a 6A power switch for high current capability
• Supports versatile topologies including boost, inverting, Cuk, SEPIC, and flyback
• Features adjustable switching frequency up to 2.5MHz
• Includes comprehensive fault protection mechanisms

Applications

• Industrial power supplies requiring flexible topology options
• Battery-powered systems needing efficient voltage conversion
• Automotive electronics with wide input voltage ranges
• Telecommunications equipment utilizing negative or positive rail generation

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the EFE package variant matches your PCB footprint requirements. Ensure the supplier source is authorized to guarantee component authenticity. Check for any recent manufacturing changes or obsolescence notices from Analog Devices. Validate that the operating conditions align with the specified thermal and electrical limits.

Selection Notes

Select this component when a single IC must support multiple converter topologies without external controller complexity. The integrated 6A switch reduces the need for external passives in high-current designs. Consider the adjustable frequency for optimizing EMI performance against system noise constraints. Evaluate the thermal performance of the QFN package for your specific enclosure environment. Compare against fixed-frequency alternatives if cost sensitivity outweighs topology flexibility needs.

Part Context

This part belongs to the LT3579 family of monolithic switching regulators designed for applications demanding high efficiency and compact solutions. It complements other Analog Devices PMICs by offering specialized multi-topology functionality. The device addresses design challenges in space-constrained environments where board area is critical. It serves as a core power management element in systems requiring robust voltage regulation under varying load conditions.

Replacement Considerations

LT3579IUFD#PBF offers identical electrical specifications but utilizes a 20-QFN (4x5) package instead of the EFE variant. Verify pinout compatibility and thermal pad dimensions when substituting packages. No functional differences exist between these suffixes regarding internal circuitry.