LT8640HUDC#TRPBF

Overview

The LT8640HUDC#TRPBF is a synchronous step-down Silent Switcher regulator from Analog Devices, housed in an 18-lead QFN package. It supports input voltages from 3.4V to 42V and delivers up to 5A of output current with adjustable voltage ranging from 0.97V to 41.58V. The device features a programmable switching frequency between 200kHz and 3MHz and operates within a junction temperature range of -40°C to +150°C.

Feature Summary

• Integrates Silent Switcher architecture to minimize electromagnetic interference radiation without requiring external ferrite beads.
• Provides high efficiency across wide load ranges through synchronous rectification and optimized control loop design.
• Supports flexible system design via adjustable switching frequency and wide input voltage capability.

Applications

• Industrial distributed power systems
• Automotive infotainment and sensor nodes
• Telecommunications base station power distribution

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm the HUDC variant meets automotive AEC-Q100 Grade 1 requirements if applicable. Ensure compatibility with the intended thermal management solution for the exposed pad ground connection.

Selection Notes

Select this component for applications requiring high current density and strict EMI limits. Compare against the LT8640SEV-2 if lower quiescent current is critical, noting the difference in package and maximum operating temperature ratings.

Part Context

This part belongs to the LT8640 family of high-efficiency synchronous buck converters. It shares architectural similarities with other Silent Switcher devices but is distinguished by its specific 5A current rating and extended temperature range suitable for demanding environments.

Replacement Considerations

LT8640IUDC#TRPBF offers similar electrical performance with a slightly different switching frequency range and commercial temperature grade.