LTC3851EUD#PBF

DC DC Switching Controllers Overview

The LTC3851EUD#PBF is a high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It is designed to drive an all N-channel synchronous power MOSFET stage, offering efficient DC-to-DC conversion with a buck topology. The device supports an input voltage range from 4V to 38V and provides an adjustable output voltage between 800mV and 5.5V. It can deliver up to 25A of output current depending on the external component selection. Key electrical parameters include a typical static current of 20µA and a switch frequency capability up to 790kHz. The controller operates within a temperature range of -40°C to +85°C and is housed in a 16-pin QFN EP package.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFETs for high efficiency
• Supports pulse skip operation for improved light-load performance
• Includes integrated soft-start and tracking capabilities
• Features comprehensive protection mechanisms including thermal shutdown

DC DC Switching Controllers Applications

• High efficiency synchronous step-down converters
• Point-of-load regulation systems
• Industrial equipment power supplies
• Telecommunications infrastructure

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the E-grade temperature rating (-40°C to +85°C) matches your environmental requirements. Ensure the 16-QFN EP package footprint aligns with your PCB design guidelines. Cross-reference the datasheet for exact pinout configurations before finalizing procurement specifications.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring wide input voltage ranges and high output currents. Consider the external MOSFET selection carefully to support the desired current levels and switching frequencies. Evaluate the need for pulse skip mode if light-load efficiency is critical. Ensure adequate thermal management solutions are implemented due to the high power density capabilities of the synchronous buck topology.

DC DC Switching Controllers Part Context

This component belongs to the LTC3851 family of synchronous step-down DC/DC controllers. It shares functional similarities with other models in the series but differs in temperature grades and packaging options. The EUD variant specifically denotes the extended temperature range and QFN package configuration suitable for surface mount assembly in compact designs.

DC DC Switching Controllers Replacement Considerations

LTC3851AEUD-1#PBF offers an automotive-grade alternative with an extended temperature range up to 125°C. LTC3851IUD-1 serves as another variant within the same family. Verify compatibility with existing circuit designs when substituting these parts.