LTC3861EUHE#TRPBF

DC DC Switching Controllers Overview

The LTC3861EUHE#TRPBF is a dual PolyPhase synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3 V to 24 V and supports output voltages from 600 mV to 5.5 V. The device delivers up to 40 A of output current across two channels. It features a switchable frequency between 250 kHz and 3 MHz, with a typical operating point at 2.25 MHz. Packaged in a QFN-36 format, it functions reliably between -40°C and +125°C.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture enabling independent or synchronized multiphase control for high-current applications
• Accurate current sharing mechanism ensures balanced load distribution across parallel phases
• Integrated soft-start and tracking capabilities facilitate controlled power-up sequences
• Supports external clock synchronization for noise reduction and system-wide timing alignment

DC DC Switching Controllers Applications

• High-current distributed power systems requiring efficient thermal management
• Digital signal processor (DSP) core voltage regulation
• Telecommunications infrastructure DC/DC power supplies
• Industrial equipment power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official documentation. Check for obsolescence notices as this series may be subject to discontinuation. Ensure the supplier provides valid traceability data for quality assurance purposes.

DC DC Switching Controllers Selection Notes

Select this component when dual independent buck outputs are required within a single package footprint. Consider the 40 A total current capability against thermal dissipation constraints in the QFN-36 package. Evaluate the 3 V to 24 V input range against available bus voltages. Verify that the 250 kHz to 3 MHz frequency range aligns with EMI requirements and inductor selection.

DC DC Switching Controllers Part Context

This part belongs to the LTC3861 family of PolyPhase controllers. It shares functional similarities with the LTC3861EUH-1 but differs in package type and pinout configuration. The EUHE variant utilizes a larger QFN-36 package compared to the QFN-32 version, accommodating different thermal and electrical interface requirements.

DC DC Switching Controllers Replacement Considerations

LTC3861EUH-1#PBF offers similar functionality in a QFN-32 package. Cross-reference pinouts carefully due to package differences. Verify if the alternative meets the same 40 A current rating and input voltage specifications.