LTC3887EUJ#PBF

DC DC Switching Controllers Overview

The LTC3887EUJ#PBF is a dual-phase current mode DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 7V to 14V and provides a programmable output voltage from 500mV to 5.5V. The device supports a maximum output current of 30A per phase, utilizing a switching frequency adjustable between 250kHz and 1MHz. It features a QFN-40 package and includes a PMBus interface for digital power system management. The controller ensures high efficiency through synchronous rectification and offers thermal protection capabilities.

DC DC Switching Controllers Feature Summary

• Integrates a PMBus interface for comprehensive digital power system management and monitoring
• Utilizes dual-phase current mode architecture to minimize input capacitor ESR losses and noise
• Supports inductor DCR sensing for accurate current sharing and load regulation

DC DC Switching Controllers Applications

• High current dual output polyphase step-down DC/DC converters
• Distributed DC power systems requiring digital control
• Battery operated digital devices needing efficient power conversion

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the QFN-40 package dimensions match your PCB footprint requirements. Ensure the design supports the required 7V to 14V input range and utilizes appropriate external MOSFETs for the 30A output capability. Check for availability constraints as supply status may vary.

DC DC Switching Controllers Selection Notes

Select this component when dual-phase synchronous buck conversion with digital management is required. It is suitable for applications demanding high efficiency and precise current sharing via DCR sensing. Consider the 250kHz to 1MHz frequency range for balancing size and efficiency. Ensure the system can accommodate the QFN-40 package and supports the necessary PMBus communication protocol for configuration.

DC DC Switching Controllers Part Context

This part belongs to the LTC3887 series of PolyPhase controllers designed for high-performance power management. It is often evaluated using demonstration boards like the DC2394A or DC2263A. The device complements other Analog Devices power solutions by providing robust digital control features integrated into a compact surface-mount package.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing designs if considering alternative models within the same family.