LT3667EMSE#PBF

Overview

The LT3667EMSE#PBF is a synchronous step-down switching regulator from Analog Devices, housed in a 10-lead MSOP package with an exposed pad. It operates within an input voltage range of 4.3V to 40V and delivers up to 400mA of output current. The device features a fixed 2.2MHz switching frequency and supports three independent outputs. It includes integrated fault protection mechanisms and maintains low quiescent current of 40µA during shutdown.

Feature Summary

• Integrates dual fault protection for enhanced system reliability
• Supports three independent regulated output channels
• Operates at a fixed high switching frequency for compact design

Applications

• Industrial control systems requiring multi-rail power distribution
• Telecommunications infrastructure equipment
• Embedded systems with strict size constraints

Procurement Notes

Verify the specific suffix EMSE against the official datasheet to confirm the package type and temperature grade. Ensure compatibility with the required input voltage range and output current specifications for your application. Check for RoHS compliance status as indicated in the manufacturer documentation.

Selection Notes

Select this component when a compact solution for multiple low-current rails is needed. The fixed 2.2MHz frequency allows for smaller external inductors compared to lower frequency alternatives. Consider the thermal performance of the MSOP package for your specific PCB layout and ambient conditions.

Part Context

This part belongs to the LT3667 series of high-voltage synchronous buck regulators. It is designed for applications requiring efficient power conversion from higher voltage buses down to lower logic or sensor voltages. The series emphasizes small footprint and integrated protection features.

Replacement Considerations

Consult the official Analog Devices cross-reference guide for verified substitutes. Ensure any replacement matches the 40V input rating, 400mA output capability, and 10-lead MSOP package dimensions.