LT3641EUFD#PBF

Overview

The LT3641EUFD#PBF is a dual monolithic buck regulator manufactured by Analog Devices Inc., housed in a 28-lead QFN package. It operates with an input voltage range of 4V to 42V and delivers up to 1.3A per channel. The device features a fixed 2.5MHz switching frequency, adjustable output voltages from 1.265V to 40.97V, and integrated power-on reset and watchdog timer functions.

Feature Summary

• Integrates two synchronous step-down converters within a single compact package
• Includes built-in power-on reset generator and programmable watchdog timer for system protection
• Supports high input voltage operation suitable for industrial and automotive applications

Applications

• Industrial control systems requiring isolated or multi-rail power distribution
• Automotive electronics utilizing high-voltage bus architectures
• Embedded systems needing reliable startup sequencing and fault monitoring

Procurement Notes

Verify the specific suffix 'EUFD' against official Analog Devices documentation to confirm temperature grade and packaging specifications. Ensure compatibility with required input voltage ranges and thermal management solutions before finalizing procurement orders.

Selection Notes

Select this component when dual independent buck outputs are required alongside integrated system supervision features. Consider the fixed 2.5MHz frequency for EMI constraints and verify that the 28-QFN package fits the available PCB footprint and thermal dissipation requirements.

Part Context

This part belongs to the LT3641 series of high-voltage dual buck regulators. It is designed for applications demanding high efficiency and compact size while providing essential system monitoring capabilities through integrated reset and watchdog circuits.

Replacement Considerations

LT3641IUFD#PBF