LTC3859EFE#PBF

DC DC Switching Controllers Overview

The LTC3859EFE#PBF is a high-performance triple output synchronous DC/DC switching regulator controller from Analog Devices. It supports Buck, Buck/Boost, and SEPIC topologies with an input voltage range of 4.5V to 38V. The device drives all N-channel power MOSFET stages and offers an adjustable switching frequency from 75kHz to 850kHz. Output voltages are programmable from 0.8V to 24V. It features low quiescent current of 55µA, 0.01% load regulation, and operates within a temperature range of -40°C to +125°C in a 38-lead TSSOP-EP package.

DC DC Switching Controllers Feature Summary

• Supports multiple topologies including Buck, Buck/Boost, and SEPIC for versatile power conversion applications.
• Drives all N-channel power MOSFET stages to maximize efficiency across the operating range.
• Includes advanced control features such as soft start, tracking, and power good signals.

DC DC Switching Controllers Applications

• Industrial equipment requiring multi-rail power distribution
• Automotive electronics systems
• Telecommunications infrastructure

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm that the EFE variant corresponds to the TSSOP-EP-38 package rather than other form factors like QFN. Ensure the supplier provides official documentation confirming the automotive or industrial grade specifications if required for your design environment.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring three independent regulated outputs from a single controller IC. It is suitable for applications needing wide input voltage ranges up to 38V. Consider the thermal performance of the exposed pad package for high-current designs. Verify that the external MOSFET selection matches the drive capabilities and switching frequency requirements.

DC DC Switching Controllers Part Context

The LTC3859 belongs to a family of synchronous controllers designed for complex power management needs. It integrates precision references and error amplifiers to ensure accurate regulation. The device simplifies board layout by consolidating control logic for multiple converters into a single compact solution.

DC DC Switching Controllers Replacement Considerations

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