LT3663HMS8E-5#TRPBF

Overview

The LT3663HMS8E-5#TRPBF is a current mode step-down switching regulator manufactured by Analog Devices Inc. It features a fixed 5V output with a maximum output current of 1.2A. The device operates within an input voltage range of 7.5V to 36V and supports a switching frequency of 1MHz. It includes programmable output current limiting to control system power dissipation. The component is housed in an 8-pin MSOP package and functions within an operating temperature range of -40°C to +125°C.

Feature Summary

• Integrates programmable output current limit for precise power dissipation control
• Utilizes current mode architecture for stable step-down regulation
• Designed to reduce the physical size of external power path components

Applications

• General DC to DC conversion systems requiring isolated outputs
• Applications necessitating compact power path component sizing
• Systems utilizing current mode step-down switching regulation

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing from distributors. Confirm that the H variant corresponds to the extended temperature grade (-40°C to +125°C) as documented in official specifications. Ensure compatibility with 8-pin MSOP surface mount assembly processes. Cross-reference part numbers with Analog Devices documentation to confirm active status and availability constraints.

Selection Notes

Select this model for designs requiring a fixed 5V output at up to 1.2A from inputs between 7.5V and 36V. The integrated current limit feature is critical for applications needing precise power management without large external shunts. Consider the 1MHz switching frequency for balancing efficiency and passive component size. The extended temperature range makes it suitable for industrial or automotive environments where thermal stability is required.

Part Context

This component belongs to the LT3663 family of synchronous buck converters. It shares architectural similarities with variants like LT3663IMS8E-5 and LT3663EMS8E-5, differing primarily in temperature grading and packaging format. The H designation typically denotes extended industrial temperature performance compared to standard commercial grades found in other suffixes within the same series.

Replacement Considerations

LT3663IMS8E-5#TRPBF: Commercial grade equivalent with identical electrical parameters but limited temperature range. LT3663EMS8E-5#TRPBF: Extended temperature grade alternative; verify if E and H designations are functionally interchangeable per manufacturer guidelines.