LT3667IMSE#TRPBF

Overview

The LT3667IMSE#TRPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3 V to 40 V and provides three independent outputs, each capable of delivering up to 400 mA. The device integrates two internal N-channel power switches and supports adjustable switching frequencies up to 2.2 MHz. It features dual fault protection mechanisms and maintains low quiescent current for efficient operation in space-constrained designs.

Feature Summary

• Integrates dual N-channel power switches for high-efficiency synchronous rectification
• Provides three independent regulated output channels from a single package
• Includes dual fault protection circuitry for enhanced system reliability

Applications

• Industrial control systems requiring multiple isolated rails
• Automotive electronics operating within wide input voltage ranges
• Communication infrastructure power distribution networks

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the IMSE variant meets industrial temperature requirements. Ensure compatibility with existing PCB footprints for the QFN-24 package. Cross-reference datasheet revisions for any pinout or electrical parameter updates before finalizing procurement.

Selection Notes

Select this component when designing multi-rail buck converters requiring compact integration. The fixed 400 mA per channel rating suits moderate load applications. Consider the 2.2 MHz maximum frequency for minimizing passive component size. Evaluate thermal performance given the QFN-24 package constraints under full load conditions.

Part Context

This part belongs to the LT3667 family of triple-output synchronous buck regulators. It shares architectural similarities with other high-voltage buck ICs but distinguishes itself through its triple-channel configuration. The IMSE designation specifies the industrial temperature grade and MSOP-style leaded package variant adapted for surface mount.

Replacement Considerations

LT3667IUDD#PBF serves as a tube-packaged alternative within the same series.