LTC3861IUHE#TRPBF

DC DC Switching Controllers Overview

The LTC3861IUHE#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 output current with a switch frequency of 2.25 MHz. It features a QFN-36 package, operates between -40°C and +125°C, and includes a shutdown function.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture supporting multiphase configurations for high-current distributed power systems
• Integrated accurate current sharing mechanism ensuring balanced load distribution across phases
• Voltage mode control with remote output sensing for precise regulation and transient response

DC DC Switching Controllers Applications

• High current distributed power systems
• Digital signal processor (DSP) power supplies
• Telecommunications DC/DC power supplies
• Industrial DC/DC power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the component status as the source data indicates potential end-of-life or limited supply conditions for this family. Ensure compatibility with the required QFN-36 footprint and verify RoHS compliance documentation prior to integration into production designs.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring dual independent outputs with precise current balancing. The 2.25 MHz switching frequency allows for compact passive component selection. Ensure the design accommodates the 3 V to 24 V input range and utilizes external MOSFETs and gate drivers suitable for the target current levels. Verify thermal management requirements for the QFN-36 package under maximum load conditions.

DC DC Switching Controllers Part Context

This component belongs to the LTC3861 series of PolyPhase controllers designed for high-performance power delivery. It complements evaluation boards such as the DC1822A and DC1822B, which demonstrate its capabilities in buck converter topologies. The series is engineered for demanding environments where efficiency and transient response are critical.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate the LTC3861EUHE#TRPBF for pin-compatible alternatives within the same series, noting that package variations may exist.