LTC7851EUHH#PBF

DC DC Switching Controllers Overview

The LTC7851EUHH#PBF is a quad output multiphase synchronous step-down switching regulator controller from Analog Devices. It employs a constant frequency voltage mode architecture to manage multiple power rails efficiently. The device supports an input voltage range of 7V to 14V and operates with a switching frequency between 250kHz and 3MHz. It features a 58-lead PQFN package designed for high thermal performance and compact board space.

DC DC Switching Controllers Feature Summary

• Quad output capability for independent multi-rail regulation
• Constant frequency voltage mode control architecture
• Integrated synchronization and tracking support
• Comprehensive protection including current limit and soft start

DC DC Switching Controllers Applications

• High-current CPU and GPU core voltage regulation
• Multi-phase server and data center power distribution
• Industrial equipment requiring multiple stable DC rails
• Telecommunications base station power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging. Confirm the operating temperature grade matches system requirements, as industrial variants may differ. Ensure the 58-pin PQFN footprint aligns with PCB design constraints. Cross-reference the datasheet revision date to confirm feature compatibility with existing designs.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring four independent buck outputs from a single IC. It is suitable for applications needing precise voltage tracking and synchronization across multiple phases. Consider the maximum output current capabilities per channel when sizing external MOSFETs and inductors. Evaluate the switching frequency range to balance efficiency against component size.

DC DC Switching Controllers Part Context

This component belongs to the LTC7851 family of high-performance multiphase controllers. It is designed to replace discrete solutions or simpler dual-output controllers in complex power architectures. The EUHH variant specifies the extended temperature range and specific pin configuration within the 58-lead PQFN form factor.

DC DC Switching Controllers FAQ

What is the maximum switching frequency supported by the LTC7851EUHH?

The device supports a programmable switching frequency range from 250kHz to 3MHz.

Does the LTC7851EUHH support external clock synchronization?

Yes, the controller includes pins for external clock synchronization to align multiple converters.

How many independent output channels does this controller provide?

The LTC7851EUHH provides four independent output channels for synchronous buck conversion.