LT3667HMSE#TRPBF

Overview

The LT3667HMSE#TRPBF is a high-voltage triple output step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 4.3 V to 40 V and delivers up to 400 mA of output current. The device integrates three buck converters within a compact QFN-24 package, supporting a switching frequency between 250 kHz and 2.2 MHz. It features low quiescent current of 50 uA and dual fault protection mechanisms for enhanced reliability in demanding power management applications.

Feature Summary

• Integrates three independent synchronous buck regulators in a single compact package
• Supports wide input voltage range suitable for industrial and automotive systems
• Includes dual fault protection mechanisms for robust operation under abnormal conditions

Applications

• Industrial control systems requiring multiple isolated or non-isolated voltage rails
• Automotive electronics operating within high-voltage environments
• Telecommunications infrastructure power distribution units

Procurement Notes

Verify the exact suffix #TRPBF indicates reel packaging when ordering. Confirm the HMSE variant matches the required thermal performance and pinout specifications for your PCB layout. Ensure compatibility with the intended switching frequency settings and fault protection configurations before finalizing procurement.

Selection Notes

Select this component when multiple regulated outputs are needed from a single high-voltage source without requiring separate controllers. Consider the QFN-24 package size constraints and thermal dissipation requirements. Evaluate if the integrated fault protection meets system safety standards compared to discrete solutions.

Part Context

This part belongs to the LT3667 family of triple output buck regulators designed for space-constrained high-voltage applications. It complements other Analog Devices PMICs by offering integrated multi-rail generation with minimal external components, reducing board area and design complexity for complex power architectures.

Replacement Considerations

LT3667HUDD#PBF is a public confirmed substitute part number offering similar triple buck functionality in a different package format.