LT8610HMSE#PBF

Overview

The LT8610HMSE#PBF is a high-efficiency, synchronous step-down DC/DC converter featuring an integrated 42V N-channel power switch. It supports input voltages from 3.5V to 42V and delivers output currents up to 5A with external current sharing capability. The device operates at switching frequencies selectable between 100kHz and 750kHz using the SYNC pin. It incorporates cycle-by-cycle current limit, thermal foldback, and open-loop PWM control for stable operation under varying load conditions.

Feature Summary

• Integrated high-voltage N-channel power switch eliminates external component count
• Synchronous rectification architecture ensures high conversion efficiency across wide load ranges
• Programmable switching frequency allows optimization for size or performance requirements
• Built-in protection mechanisms include thermal shutdown and cycle-by-cycle current limiting

Applications

• Industrial automation controllers
• Telecommunications infrastructure power supplies
• Point-of-load regulation for digital signal processors
• Automotive electronics systems

Procurement Notes

Verify the complete part number including suffixes against manufacturer documentation to ensure correct package type and temperature rating. Confirm that the specific variant matches your voltage and current requirements before procurement. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when input voltages exceed standard low-voltage regulator limits but remain below 42V. Consider the fixed switching frequency options versus programmable variants based on EMI constraints. Ensure adequate thermal management design due to the integrated power switch handling significant power dissipation in high-current applications.

Part Context

This part belongs to Analog Devices' LT8610 family of high-voltage synchronous buck converters. The HMSE designation indicates a specific thermal pad package configuration suitable for surface-mount assembly. It serves as a robust solution for medium-power applications requiring reliable step-down conversion from higher bus voltages.

Replacement Considerations

Direct replacements must match the 42V input range and 5A output capability. Verify pin compatibility for MSOP-16 packages. Alternative parts may require redesign of feedback networks or inductor selection due to differences in switching frequency characteristics.