LTC3851AHMSE#PBF

DC DC Switching Controllers Overview

The LTC3851AHMSE#PBF is a synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 38V and supports output voltages from 800mV to 5.5V. The device delivers up to 25A of output current with a single output channel. Key electrical parameters include a fixed switching frequency of 750kHz, a maximum load regulation of 0.01%, and a quiescent current of 20uA. It functions in an industrial temperature range from -40°C to +125°C and utilizes an MSOP-16 surface-mount package.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stages for high efficiency
• Features a constant frequency current mode architecture
• Supports phase-lockable switching frequencies up to 750kHz

DC DC Switching Controllers Applications

• Industrial distributed power systems
• Point-of-load (POL) conversion
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS standards as per manufacturer specifications. Confirm the MSOP-16 package variant matches the design requirements. Ensure the operating temperature grade aligns with the intended environmental conditions. Cross-reference the datasheet for any recent updates regarding pinout or electrical characteristics before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component when a high-current synchronous buck controller is required with a wide input voltage range. The fixed 750kHz frequency allows for optimized passive component selection. Consider the MSOP-16 package constraints for thermal management and PCB layout. Verify that the external MOSFETs can handle the 25A current capability and that the control loop stability is maintained across the full load and line ranges.

DC DC Switching Controllers Part Context

This part belongs to the LTC3851A series of high-performance synchronous step-down switching regulator controllers. The series is designed for applications requiring efficient power conversion with precise voltage regulation. Variants within the series differ primarily in package type and temperature rating while maintaining core electrical performance specifications.

DC DC Switching Controllers Replacement Considerations

LTC3851AEMSE#PBF: Same electrical specifications with MSOP-16 package. LTC3851AIUD-1: Similar functionality with SOIC-16 package. Verify pin compatibility and thermal performance when substituting.