LTC3856IUH#TRPBF

DC DC Switching Controllers Overview

The LTC3856IUH#TRPBF is a two-phase synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4.5V to 38V and supports output voltages from 600mV to 5V. The device delivers up to 60A of output current with a switchable frequency between 250kHz and 770kHz. It features a low quiescent current of 40µA and operates within a temperature range of -40°C to +125°C. Packaged in a QFN-32, it includes differential amplifier-based remote sensing for high-current accuracy.

DC DC Switching Controllers Feature Summary

• Integrates a differential amplifier for true remote sensing of regulated supply terminals to ensure high current accuracy.
• Supports phase-shifted operation to minimize RMS ripple currents in input and output capacitors.
• Includes programmable soft-start and timed short-circuit shutdown capabilities.

DC DC Switching Controllers Applications

• High-density point-of-load (POL) power supplies
• Industrial equipment requiring precise voltage regulation
• Telecommunications infrastructure power systems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the operating temperature grade matches the application requirements. Ensure the QFN-32 package footprint aligns with the PCB design. Cross-reference the datasheet for any recent product change notices affecting specifications or materials.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring dual-phase control with integrated remote sensing. The wide input voltage range suits various bus architectures. Consider the thermal performance of the QFN-32 package for heat dissipation needs. Evaluate the switchable frequency range to optimize efficiency versus component size.

DC DC Switching Controllers Part Context

This part belongs to the LTC3856 series of PolyPhase controllers designed for sub-milliohm DCR sensing. It is engineered to drive external N-channel MOSFET stages efficiently. The controller simplifies thermal design by distributing load across phases while maintaining tight transient response requirements.

DC DC Switching Controllers Replacement Considerations

Check for direct pin-compatible alternatives within the Analog Devices portfolio that offer similar phase counts and input voltage ranges. Verify if upgraded versions provide enhanced switching frequencies or improved thermal characteristics without altering the system layout.