LTC3855EFE

DC DC Switching Controllers Overview

The LTC3855EFE is a dual-channel, multiphase synchronous step-down switching regulator controller manufactured by Analog Devices. It operates with an input voltage range of 4.5 V to 38 V and supports output voltages from 600 mV to 12.5 V. The device features a fixed switching frequency of 770 kHz and delivers up to 30 A of output current across its two channels. It utilizes current-mode control with phase-shift technology and includes a high-speed differential remote sense amplifier for precise load regulation.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture supporting multiphase operation for reduced power loss and noise
• Integrated high-speed differential remote sense amplifier for accurate voltage regulation
• Programmable current sense voltage allowing use of inductor DCR or discrete resistors
• Supports Burst Mode operation for improved light-load efficiency

DC DC Switching Controllers Applications

• Computer systems requiring multi-phase power distribution
• Telecommunications infrastructure equipment
• Industrial and medical instrumentation power supplies
• DC power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the specific suffix EFE against official Analog Devices documentation to confirm package type and temperature rating. Ensure compatibility with required switching frequencies and control interfaces. Confirm RoHS compliance status through manufacturer datasheets before integration into final designs.

DC DC Switching Controllers Selection Notes

Select this component when designing dual-output synchronous buck converters requiring high efficiency and low noise. The integrated differential remote sense simplifies layout compared to single-ended sensing. Consider the 38-pin TSSOP-EP package constraints for thermal management and PCB space allocation during the initial design phase.

DC DC Switching Controllers Part Context

This part belongs to the PolyPhase series of power management ICs from Analog Devices. It is designed to drive all N-channel power MOSFET stages in high-current applications. The device supports configurations for up to 12 phases, offering flexibility for various power density requirements in modern electronic systems.

DC DC Switching Controllers Replacement Considerations

Official demonstration boards such as DC1617A-A and DC1617A-B are available for evaluation. Verify pinout and electrical specifications against alternative controllers if cross-referencing with other manufacturers' parts.