LTC3851EMSE-1#PBF

DC DC Switching Controllers Overview

The LTC3851EMSE-1#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 38V and delivers up to 25A output current. The device supports adjustable output voltages from 800mV to 5.5V. Key electrical parameters include a switch frequency of 750kHz, a maximum duty cycle of 99%, and a quiescent current of 20µA. It features a load regulation of 0.01% and operates within a temperature range of -40°C to +125°C. The component is housed in a 16-pin MSOP package.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stages for high efficiency
• Constant frequency current mode architecture allows phase-lockable frequencies up to 750kHz
• Includes control features such as soft start, tracking, and enable

DC DC Switching Controllers Applications

• High efficiency 3.3V/15A step-down converter designs
• 1.8V/5A converters utilizing pulse skip operation
• 1.5V/15A synchronous regulators synchronized at 350kHz

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the MSOP-16 package variant matches the target PCB footprint. Ensure the operating temperature grade aligns with system requirements. Cross-reference the manufacturer part number with official distributor catalogs to validate authenticity and current production status before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller when driving external N-channel MOSFETs is required for high-current applications. The wide input voltage range suits systems powered by single-cell Li-ion or multi-cell battery packs. The phase-lockable feature facilitates synchronization with other power supplies in complex multi-rail architectures. Consider the thermal performance of the MSOP package for the intended load conditions.

DC DC Switching Controllers Part Context

This component belongs to the LTC3851 family of wide input voltage synchronous step-down DC/DC controllers. It is designed for applications requiring high efficiency and compact solution size. The EMSE-1 designation specifies the commercial temperature grade and MSOP package type. The family supports various output configurations through external resistor networks.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.