LTC3870IUFD#TRPBF

DC DC Switching Controllers Overview

The LTC3870IUFD#TRPBF is a synchronous multiphase step-down slave controller from Analog Devices Inc. It operates with an input voltage range of 4.5V to 60V and supports output voltages from 500mV to 14V. The device features a switching frequency range of 100kHz to 1MHz, with a typical operating frequency of 500kHz. It provides two outputs and delivers up to 20A of output current. The unit is housed in a 28-QFN (4x5) package and functions within a temperature range of -40°C to 125°C TJ.

DC DC Switching Controllers Feature Summary

• Synchronous buck slave controller designed for multiphase configurations
• Supports clock synchronization for phase alignment
• Includes soft-start, current limit, and frequency control features

DC DC Switching Controllers Applications

• Multiphase DC-DC power conversion systems
• Digital power supply management
• High-current point-of-load regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm that the IUFD variant corresponds to the industrial temperature grade and 28-QFN package dimensions. Ensure compatibility with master controllers in multiphase setups by checking phase shift requirements. Cross-reference the manufacturer datasheet for pinout and thermal pad specifications before integration.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high-efficiency synchronous rectification in multiphase buck converters. It is suitable for designs needing precise phase interleaving via clock sync. Consider the 60V maximum input rating for higher voltage bus architectures. Evaluate thermal performance based on the QFN package and expected load currents up to 20A.

DC DC Switching Controllers Part Context

This part belongs to the LTC3870 series of multiphase step-down slave controllers. It complements master controllers to distribute load current across multiple phases, reducing input and output capacitance requirements. The series is optimized for digital power supplies where phase count scalability is critical.

DC DC Switching Controllers Replacement Considerations

LTC3870EUFD#TRPBF is a verified alternative within the same family, differing primarily in temperature grade.