LT3471EDD#TR

Overview

The LT3471EDD#TR is a dual switching regulator IC manufactured by Analog Devices Inc., housed in a 10-WFDFN (3x3mm) package. It operates with an input voltage range of 2.1V to 16V and delivers up to 1.3A output current per channel. The device supports multiple topologies including boost, Cuk, flyback, and SEPIC, providing adjustable positive and negative outputs ranging from ±1V to ±40V. It features a fixed 1.2MHz switching frequency and includes shutdown functionality. Operating temperatures span from -40°C to +85°C.

Feature Summary

• Supports versatile DC-DC conversion topologies including boost, Cuk, flyback, and SEPIC configurations within a compact footprint.
• Provides dual independent channels capable of generating simultaneous positive and negative supply rails.
• Integrates high-efficiency synchronous rectification for improved power management in space-constrained designs.

Applications

• Portable battery-powered systems requiring dual polarity supplies
• Industrial control circuits needing isolated or non-isolated dual rail generation
• Embedded systems utilizing Li-ion or multi-cell battery inputs

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm packaging type and tape/reel specifications. Ensure the component matches the required thermal and electrical ratings for the target application environment. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing circuits that require two independent regulated outputs from a single low-voltage source. It is suitable for applications demanding flexible topology options such as generating negative rails from positive batteries. Consider the 3x3mm DFN package constraints for PCB layout and thermal dissipation requirements during the design phase.

Part Context

This component belongs to the LT3471 series of dual switching regulators designed for efficient power conversion in small form factors. It is commonly used alongside evaluation boards like the DC1280A for circuit validation. The device addresses the need for compact, high-performance power solutions in portable and industrial electronics.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Generic cross-references may not match the specific pinout or internal control logic of the LT3471EDD#TR.

FAQ

What topologies does the LT3471 support?

The LT3471 supports boost, Cuk, flyback, and SEPIC topologies for flexible power conversion.

What is the maximum output voltage capability?

The device can generate adjustable outputs up to ±40V depending on the configured topology.