LT8610AHMSE-5#PBF

Overview

The LT8610AHMSE-5#PBF is a synchronous step-down switching regulator from Analog Devices, featuring a 42V input range and 3.5A output current capability. It utilizes an MSOP-16 package with exposed pad for thermal management. The device operates at switch frequencies between 200 kHz and 2.2 MHz, ensuring high efficiency through synchronous rectification. Quiescent current in Burst Mode operation is maintained below 2.5 µA, supporting low standby power consumption. The component supports fixed 5V output configuration and includes integrated soft-start functionality to limit inrush current during startup sequences.

Feature Summary

• Synchronous Buck Topology: Integrates high-side and low-side N-channel MOSFETs for efficient DC-DC conversion with reduced external component count.
• Burst Mode Operation: Maintains ultra-low quiescent current during light-load or no-load conditions to improve system efficiency.
• Wide Input Voltage Range: Supports input voltages from 3.4V to 42V, accommodating various bus voltage levels.
• Programmable Frequency: Allows switching frequency adjustment from 200 kHz to 2.2 MHz to optimize trade-offs between size and performance.

Applications

• Industrial control systems requiring isolated or non-isolated power rails
• Distributed power architectures in enterprise infrastructure
• Battery-powered equipment needing extended runtime via low standby current
• Point-of-load regulation for microprocessors and FPGAs

Procurement Notes

Verify the specific suffix 'HMSE' indicates the MSOP-16 package variant when sourcing. Confirm that the '#PBF' designation ensures lead-free plating and RoHS compliance as per manufacturer standards. Cross-reference the full part number against official Analog Devices documentation to ensure compatibility with required thermal and electrical specifications before finalizing procurement orders.

Selection Notes

Select this component for applications demanding high efficiency across wide input voltage ranges. The fixed 5V output simplifies design for standard logic supplies. Consider the thermal performance of the MSOP-16 package relative to the expected load current. Ensure the chosen switching frequency aligns with available inductor sizes and EMI requirements for the target enclosure.

Part Context

This part belongs to the LT8610A family of micropower buck regulators. It shares architectural similarities with other members like the LT8610AB but may differ in specific temperature grades or internal optimizations. The family is designed for space-constrained applications requiring robust performance. Development kits such as DC2012A are available for evaluation.

Replacement Considerations

LT8610ABHMSE-5#PBF is a documented alternative within the same product family. Verify if the 'A' versus 'AB' designation implies any functional differences in ripple characteristics or temperature range according to the latest datasheet revisions before substituting.