LT8640SEV-2#PBF

Overview

The LT8640SEV-2#PBF is a synchronous buck Silent Switcher 2 regulator from Analog Devices, housed in an LQFN-24 package. It supports 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 functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates Silent Switcher 2 architecture to minimize electromagnetic interference radiation without external components.
• Features internal bypass capacitors that optimize high-speed current loops to reduce layout sensitivity.
• Supports spread spectrum modulation for further EMI reduction and forced continuous mode operation.

Applications

• Industrial distributed power systems
• Point-of-load regulation in telecom infrastructure
• Automotive electronics requiring robust switching performance

Procurement Notes

Verify the specific suffix against official datasheets to confirm pinout and thermal characteristics. Confirm RoHS compliance status through manufacturer documentation. Check for moisture sensitivity levels prior to soldering. Ensure availability aligns with restricted supply notices found on distributor platforms.

Selection Notes

Select this component when high efficiency at elevated switching frequencies is required alongside strict EMI constraints. The wide input voltage range accommodates various bus architectures. Evaluate thermal requirements based on the LQFN-24 package capabilities for the target load conditions.

Part Context

This part belongs to the LT8640S family of synchronous buck converters. It shares core topology with variants like LT8640SEV#PBF but includes specific revisions indicated by the '-2' suffix. These revisions typically address manufacturing updates or minor electrical parameter adjustments rather than functional changes.

Replacement Considerations

LT8640SEV#PBF serves as a primary alternative within the same series. Verify if the '-2' suffix denotes a specific revision change before substitution. Other family members may offer different current ratings or packaging options.