LTC3851IMSE-1#TRPBF

DC DC Switching Controllers Overview

The LTC3851IMSE-1#TRPBF is a high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 38V and supports adjustable output voltages from 800mV to 5.5V. The device drives all N-channel synchronous power MOSFETs with a maximum output current capability of 25A. Key electrical parameters include a switch frequency range of 250kHz to 750kHz, a quiescent current of 20µA, and a supply voltage range of 4V to 38V. It functions reliably across a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Constant frequency current mode architecture allows for phase-lockable frequencies up to 750kHz.
• Drives an all N-channel synchronous power MOSFET stage for high efficiency.
• Includes internal bias regulation and mode selection for forced CCM, pulse skip, or burst operation.

DC DC Switching Controllers Applications

• Point-of-load DC/DC conversion in industrial systems
• High-efficiency step-down regulation for embedded processors
• Telecommunications power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the IMSE variant meets the required industrial temperature grade (-40°C to +125°C). Ensure the SSOP-16 package footprint matches the design layout. Cross-reference the manufacturer part number with official Analog Devices documentation to confirm current production status and availability constraints.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring wide input voltage ranges up to 38V and high output currents up to 25A. The constant frequency current mode control simplifies compensation and EMI filtering. Consider the 250kHz to 750kHz adjustable switching frequency to optimize inductor size versus efficiency trade-offs. Verify that the external MOSFETs selected can handle the peak currents generated by this controller.

DC DC Switching Controllers Part Context

This part belongs to the LTC3851A family of synchronous buck regulators. It shares architectural similarities with other members like the LTC3851EMSE-1 but differs in temperature rating and package options. The series is designed for applications demanding high efficiency and precise voltage regulation under varying load conditions.

DC DC Switching Controllers Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Consult Analog Devices technical support for direct replacements or pin-compatible alternatives within the same product family.