LTC3887EUJ-1#PBF

DC DC Switching Controllers Overview

The LTC3887EUJ-1#PBF is a dual-output polyphase buck DC/DC controller from Analog Devices, designed for high-efficiency power conversion. It operates with an input voltage range of 4.5V to 24V and supports switching frequencies between 250kHz and 1MHz. The device features two independent outputs capable of delivering up to 30A each, with output voltages programmable from 500mV to 5.5V. Packaged in a 40-pin QFN (6x6mm) with an exposed pad, it integrates PMBus interface capabilities for digital power system management. Operating temperatures span from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Dual-output architecture supporting polyphase operation for enhanced current handling and thermal distribution
• Integrated PMBus interface enabling comprehensive digital power system management and monitoring
• Synchronous buck topology with adjustable switching frequency for optimized efficiency across load ranges

DC DC Switching Controllers Applications

• High-current server and storage backplane power systems
• Telecommunications infrastructure power distribution
• Industrial equipment requiring isolated or multi-rail power regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix '-1' indicates DCR sense configuration when reviewing datasheets. Confirm package marking matches the 40-QFN specification. Ensure compatibility with required PMBus command sets for your system integration. Check for any recent product change notifications affecting pinout or electrical characteristics before finalizing designs.

DC DC Switching Controllers Selection Notes

Select this component when dual independent regulated outputs are required from a single controller IC. The polyphase capability allows scaling current capacity by paralleling phases externally. Verify that the external MOSFETs selected can handle the peak currents associated with the 30A per output rating. Ensure the PCB layout accommodates the thermal requirements of the exposed pad QFN package for adequate heat dissipation.

DC DC Switching Controllers Part Context

This part belongs to the LTC3887 family of polyphase controllers, which are engineered for demanding applications requiring high current density and precise voltage regulation. The '-1' variant specifically denotes support for DCR (DC Resistance) sensing, eliminating the need for external sense resistors. It complements other members like the LTC3887EUJ by offering integrated digital management features within a compact footprint suitable for dense power boards.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3887IUJ-1#PBF for improved temperature performance. For non-DCR sensing applications, the standard LTC3887EUJ#PBF may be considered if digital features align. Always verify pin-to-pin compatibility and software register mapping before swapping components in existing designs.