LT3988IMSE#PBF

Overview

The LT3988IMSE#PBF is a dual-channel synchronous step-down DC/DC converter manufactured by Analog Devices Inc. It features two independent channels, each capable of delivering up to 1A output current. The device supports an input voltage range from 4.1V to 60V and provides adjustable output voltages starting from 0.75V up to 59.4V per channel. Operating with a switch frequency range between 250kHz and 2.15MHz, it utilizes a 16-lead MSOP package with an exposed pad for thermal dissipation. The component operates within a junction temperature range of -40°C to +125°C.

Feature Summary

• Dual-channel architecture providing independent control over two separate power rails
• Integrated synchronous rectification for improved efficiency across load ranges
• Wide input voltage capability supporting direct connection to various bus architectures
• Adjustable switching frequency allows optimization for size versus performance trade-offs

Applications

• Industrial automation systems requiring multiple isolated or non-isolated power domains
• Distributed power supply architectures in telecommunications infrastructure
• Battery-powered equipment needing efficient voltage regulation from varying source levels
• Embedded computing platforms requiring compact dual-rail power solutions

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm package type and tape/reel specifications. Ensure that the procurement channel sources components directly from authorized distributors to guarantee authenticity. Cross-reference the date code and lot markings with manufacturer quality reports. Confirm compliance with RoHS directives and material declarations prior to integration into final assemblies.

Selection Notes

Select this component when dual independent buck converters are required within a single footprint constraint. Evaluate the thermal requirements of the application, as the exposed pad design necessitates adequate PCB copper area for heat dissipation. Consider the minimum operating input voltage of 4.1V to ensure compatibility with the system's power source under all conditions. Assess the maximum output voltage limit relative to downstream load requirements for both channels.

Part Context

This part belongs to the LT3988 family of dual synchronous step-down converters designed for high-density power applications. It complements other Analog Devices PMIC offerings by providing integrated dual-channel functionality without external controller complexity. The series targets applications demanding reliable regulation from wide input ranges while maintaining small solution sizes through high-frequency operation capabilities.

Replacement Considerations

Consult official Analog Devices substitution guides for verified alternatives. Direct pin-compatible replacements may exist within the same product family or newer generations offering enhanced thermal performance. Verify electrical parameter equivalence before implementation.