LT8640SHV-2#PBF

Overview

The LT8640SHV-2#PBF is a synchronous step-down Silent Switcher 2 regulator from Analog Devices, housed in a 24-lead LQFN package. It supports an input voltage range of 3.4 V to 42 V and delivers up to 6 A of output current. The adjustable output voltage spans from 970 mV to 41.58 V. Operating frequencies are programmable between 200 kHz and 3 MHz. Quiescent current is specified at 2.5 uA. The device operates within a junction temperature range of -40°C to +150°C.

Feature Summary

• Integrates Silent Switcher 2 technology for minimized electromagnetic interference emissions without external filters.
• Features high-efficiency synchronous buck topology with integrated power switches.
• Includes shutdown functionality for system power management.

Applications

• Industrial automation controllers
• Telecommunications infrastructure power distribution
• Point-of-load regulation for digital signal processors

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and thermal rating. Confirm moisture sensitivity levels and reflow soldering profiles prior to assembly. Ensure compatibility with required operating temperature ranges for the target application environment.

Selection Notes

Select this component when high input voltages up to 42 V are required alongside significant current delivery. The extended +150°C junction temperature rating distinguishes it from standard industrial variants. Evaluate thermal performance requirements given the compact LQFN footprint and high power density capabilities.

Part Context

This part belongs to the LT8640S family of Silent Switcher regulators. It shares core electrical specifications with other suffixes but differs in thermal characteristics and package handling. The 'H' designation typically indicates enhanced thermal performance or specific automotive-grade qualification within the series.

Replacement Considerations

LT8640SEV-2#PBF and LT8640SIV-2#PBF are electrically similar parts within the same family. Verify if the lower maximum junction temperature ratings of these alternatives meet the specific thermal requirements of the design.