LT8640SIV-2#PBF

Overview

The LT8640SIV-2#PBF is a synchronous step-down Silent Switcher 2 DC/DC converter from Analog Devices. It features an input voltage range of 3.4 V to 42 V and delivers up to 6 A output current. The adjustable output voltage spans from 970 mV to 41.58 V with a single output configuration. Operating frequencies are programmable between 200 kHz and 3 MHz, while quiescent current is specified at 2.5 uA. The device supports shutdown functionality and operates within a temperature range of -40°C to +125°C. It is housed in a 24-LQFN package.

Feature Summary

• Integrates Silent Switcher 2 technology for reduced electromagnetic interference without external filters.
• Supports wide input voltage ranges suitable for industrial and automotive power distribution.
• Includes programmable switching frequency to optimize efficiency and component size.
• Features low quiescent current operation to enhance system efficiency in standby modes.

Applications

• Industrial automation control systems
• Automotive electronics power management
• Telecommunications infrastructure equipment
• Point-of-load regulation modules

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to ensure correct thermal and electrical specifications. Confirm that the LQFN-24 package matches your PCB footprint requirements. Check for moisture sensitivity level compliance during storage and handling. Ensure the ordering part number aligns with the required operating temperature range and performance characteristics defined in the datasheet.

Selection Notes

Select this component when high efficiency and low noise are critical for sensitive analog loads. The Silent Switcher 2 architecture eliminates the need for bulky EMI filters, saving board space. Consider the 6 A current capability for dense power designs. Verify that the 42 V maximum input voltage suits the source supply. Evaluate the thermal performance within the 24-LQFN package for the expected load conditions.

Part Context

This part belongs to the LT8640S series, designed for high-efficiency buck conversion. It complements other variants like the LT8640SIV#PBF by offering specific package or thermal optimizations. The Silent Switcher 2 family addresses stringent EMI requirements in compact designs. It serves as a core PMIC solution for modern electronic systems requiring reliable power regulation.

Replacement Considerations

LT8640SIV#PBF is a parameter-equivalent alternative within the same series. LT8640SEV-2#PBF offers similar electrical characteristics with potential package variations. LT8640SHV-2#PBF provides extended high-temperature capabilities. Verify pin compatibility and thermal dissipation requirements before substitution.