LT3667IMSE#PBF

Overview

The LT3667IMSE#PBF 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 delivers up to 400 mA of output current. The device integrates two fault protection mechanisms and supports a switching frequency of 2.2 MHz. It features a low operating supply current of 40 µA and includes a shutdown function for power management. The component is housed in a QFN-24 package and is rated for operation between -40°C and +125°C.

Feature Summary

• Integrates dual fault protection mechanisms for enhanced system reliability
• Supports high-frequency switching at 2.2 MHz to minimize passive component size
• Features low quiescent current consumption for efficient standby operation

Applications

• Industrial control systems requiring robust power regulation
• Automotive electronics operating within specified voltage ranges
• Communication infrastructure equipment

Procurement Notes

Verify the exact part number suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with your PCB footprint, specifically the QFN-24 configuration. Cross-reference datasheet revisions to confirm pinout consistency if replacing existing designs. Confirm RoHS compliance status through manufacturer declarations.

Selection Notes

Select this component when a compact buck regulator is needed for inputs up to 40 V. The integrated fault protections simplify design compared to discrete solutions. Consider the 2.2 MHz switching frequency for applications prioritizing small inductor size. Verify thermal performance requirements given the QFN-24 package constraints under maximum load conditions.

Part Context

This part belongs to the LT3667 series of monolithic switching regulators. It is designed as a space-efficient solution for mid-range current applications. The series emphasizes integration of protection features typically found in larger discrete implementations. It serves as a power management IC for systems requiring stable voltage conversion from higher input rails.

Replacement Considerations

LT3667IUDD#PBF