LT3645EMSE#TRPBF

Overview

The LT3645EMSE#TRPBF is a dual-output power management IC featuring one switching buck regulator and one low-dropout linear regulator. It operates from an input voltage range of 3.6V to 36V. The buck output provides adjustable voltage from 0.8V to 16V with up to 500mA current capability, while the LDO output supplies 0.8V to 8V at 200mA. Integrated into a compact MSOP-16 package, it supports a fixed switching frequency of 750kHz for efficient power conversion in space-constrained designs.

Feature Summary

• Integrates a high-efficiency synchronous buck converter and a precision low-dropout linear regulator within a single component
• Supports wide input voltage ranges suitable for various bus architectures without external level shifting
• Features a compact surface-mount package designed to minimize printed circuit board footprint requirements

Applications

• Portable electronic devices requiring multiple regulated voltage rails from a single battery source
• Industrial control systems utilizing wide input voltage buses
• Embedded computing modules needing combined switching and linear regulation capabilities

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when ordering. Confirm the manufacturer part number matches exactly to ensure correct package type and reel quantity specifications. Cross-reference with official distributor catalogs to validate current availability status before finalizing procurement plans.

Selection Notes

Select this component when design constraints require both high-efficiency switching regulation and low-noise linear supply from a single integrated circuit. Evaluate thermal performance based on total output current and ambient conditions. Ensure input voltage remains within the specified operational limits to maintain regulation accuracy across all operating temperatures.

Part Context

This device belongs to the LT3645 family of dual-output power management solutions. It combines switching and linear technologies to address complex power distribution needs in modern electronics. The series is characterized by integrated protection features and compact form factors suitable for dense PCB layouts.

Replacement Considerations

LT3645EUD#PBF offers identical electrical specifications but utilizes a QFN-16 package instead of MSOP-16. Verify mechanical compatibility and thermal dissipation requirements before substituting packages.