LTC7851EUHH-1#TRPBF

DC DC Switching Controllers Overview

The LTC7851EUHH-1#TRPBF is a quad-output multiphase synchronous step-down switching regulator controller from Analog Devices. It employs a constant frequency voltage mode architecture to manage power delivery for high-performance applications. The device supports input voltages ranging from 7V to 14V and offers flexible output configurations, including dual outputs of 1.2V at 95A and 1.8V at 30A, or four single-phase outputs up to 30A each. Operating with switch frequencies between 250kHz and 1150kHz in a 58-pin PQFN package, it integrates essential control features such as current limiting, soft start, and tracking capabilities.

DC DC Switching Controllers Feature Summary

• Quad-output multiphase synchronous step-down switching regulator controller
• Constant frequency voltage mode architecture for stable regulation
• Integrated control features including current limiting, soft start, and tracking

DC DC Switching Controllers Applications

• Triple phase plus single phase power block dual-output step-down converters
• Four-single phase outputs with DrMOS step-down converters
• Discrete gate driver and MOSFET based step-down converter designs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm that the EUHH variant corresponds to the 58-pin PQFN package dimensions. Ensure compatibility with the required input voltage range of 7V to 14V for the target application design before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring independent control of four distinct output rails from a single controller IC. The voltage mode architecture is suitable for systems demanding precise transient response and low output ripple. Consider the thermal performance of the 58-pin PQFN package when designing the PCB layout for high-current outputs exceeding 30A per phase.

DC DC Switching Controllers Part Context

This part belongs to the LTC7851 family of quad-output controllers designed for complex power distribution networks. It complements other Analog Devices PMIC solutions by providing multi-rail management without requiring multiple discrete controllers. The device is positioned for use in server, storage, and industrial equipment where space efficiency and multi-voltage sequencing are critical requirements.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.