LT8640SIV#WPBF

Overview

The LT8640SIV#WPBF is a synchronous step-down Silent Switcher 2 regulator from Analog Devices Inc. It supports an input voltage range of 3.4V to 42V and delivers up to 6A of output current. The device features adjustable output voltages from 970mV to 41.58V with a fixed switching frequency range of 200kHz to 3MHz. It operates within a junction temperature range of -40°C to 125°C and utilizes a 24-lead LQFN package.

Feature Summary

• Integrates Silent Switcher 2 architecture for minimized electromagnetic interference radiation without external filters
• Provides high efficiency across wide load and line conditions through synchronous rectification
• Features low quiescent current operation to maintain efficiency during light-load scenarios

Applications

• Industrial automation power supplies
• Distributed power systems in manufacturing equipment
• Point-of-load regulation for embedded controllers

Procurement Notes

Verify the specific suffix #WPBF indicates tape-and-reel packaging when reviewing distributor listings. Confirm the component matches the 24-LQFN footprint requirements for your PCB layout. Ensure the operating temperature range meets your system's thermal constraints before finalizing the order.

Selection Notes

Select this component for designs requiring high input voltage tolerance up to 42V with significant current delivery. The integrated EMI reduction simplifies compliance testing compared to standard buck converters. Consider the thermal performance of the exposed pad design for heat dissipation in dense layouts.

Part Context

This part belongs to the LT8640S family of micropower synchronous step-down regulators. It shares architectural similarities with other Silent Switcher devices but offers specific current and pinout configurations tailored for compact industrial applications.

Replacement Considerations

LT8640SIV#PBF is a tray-packaged equivalent with identical electrical specifications.