LT3988HMSE#PBF

Overview

The LT3988HMSE#PBF is a dual-channel synchronous step-down DC-DC converter manufactured by Analog Devices Inc. It operates with an input voltage range of 4.1V to 60V and provides two independent adjustable outputs, each capable of delivering up to 1A of current. The output voltage is adjustable from 0.75V to 59.4V. The device supports switching frequencies between 250kHz and 2.15MHz and functions within a junction temperature range of -40°C to 125°C. It is housed in a 16-lead MSOP package with an exposed pad.

Feature Summary

• Dual-channel architecture providing independent control over two separate output rails
• Wide input voltage capability supporting high-voltage power distribution systems
• Integrated synchronous rectification for improved efficiency across load ranges
• Adjustable switching frequency allows optimization for size or performance requirements

Applications

• Industrial distributed power architectures requiring multiple regulated rails
• High-voltage battery-powered equipment needing efficient step-down conversion
• Telecommunications infrastructure power supplies
• Automotive electronics operating on wide voltage bus systems

Procurement Notes

Verify the suffix #PBF indicates lead-free RoHS compliance when ordering. Confirm the HMSE grade meets required thermal and electrical specifications for your operating environment. Ensure the 16-MSOP-EP footprint matches your PCB layout design. Cross-reference the manufacturer datasheet for latest pinout and thermal pad connection guidelines before finalizing procurement.

Selection Notes

Select this component when dual isolated or non-isolated low-voltage rails are needed from a high-voltage source. Compare against single-channel alternatives if only one output is strictly necessary to reduce board space. Consider the maximum switch current rating relative to your peak load demands. Evaluate the thermal performance requirements given the compact package size and potential heat dissipation needs under heavy loads.

Part Context

This part belongs to the LT3988 family of dual synchronous buck converters designed for high-voltage applications. It shares architectural similarities with other high-voltage regulators but distinguishes itself through its dual-output capability. The device integrates power switches and control logic into a single compact package, simplifying design compared to discrete solutions using separate controllers and MOSFETs.

Replacement Considerations

LT3988EMSE#PBF serves as a direct functional substitute within the same product family.