LTC3856EFE#TRPBF

DC DC Switching Controllers Overview

The LTC3856EFE#TRPBF is a dual-phase synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4.5 V to 38 V and supports output voltages from 600 mV to 5 V. The device delivers up to 60 A of output current with a programmable switching frequency between 250 kHz and 770 kHz. It features a low quiescent current of 40 uA and functions within a temperature range of -40°C to +125°C. The component is housed in a 32-lead QFN package.

DC DC Switching Controllers Feature Summary

• Dual-phase architecture for high-current delivery
• Integrated differential remote sense amplifier
• Programmable switching frequency control
• Low quiescent current operation

DC DC Switching Controllers Applications

• High-performance computing power supplies
• Industrial distributed power systems
• Telecommunications infrastructure equipment

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the manufacturer part number matches exactly, as Analog Devices uses distinct suffixes for package type and reel configuration. Check for RoHS compliance documentation if required for your assembly process. Ensure the supplier provides valid traceability records for this PMIC category.

DC DC Switching Controllers Selection Notes

Select this controller when designing systems requiring dual-phase synchronization and high efficiency at moderate frequencies. The integrated differential remote sense feature makes it suitable for applications where load regulation accuracy is critical over long PCB traces. Compare against single-phase alternatives if current requirements exceed 60 A or if lower switching frequencies are preferred for EMI reduction.

DC DC Switching Controllers Part Context

This component belongs to the LTC3856 family of synchronous buck controllers. It is designed to drive external N-channel MOSFETs to create efficient step-down converters. The device integrates error amplifiers, oscillators, and gate drivers specifically optimized for high-current digital loads.

DC DC Switching Controllers FAQ

What is the purpose of the differential remote sense pins?

The differential remote sense inputs allow the controller to measure the output voltage directly at the load, compensating for voltage drops across PCB traces and improving load regulation accuracy.

How is the switching frequency determined?

The switching frequency is programmable via an external resistor connected to the RT pin, allowing selection between 250 kHz and 770 kHz.