LTC3851IUD#TRPBF

DC DC Switching Controllers Overview

The LTC3851IUD#TRPBF is a high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4.5V to 32V and supports output currents up to 15A in buck topology configurations. The device utilizes a constant frequency current mode architecture, allowing for phase-lockable frequencies up to 750kHz. It is housed in a 16-lead QFN package and is designed to drive all N-channel synchronous power MOSFET stages for efficient DC-to-DC conversion.

DC DC Switching Controllers Feature Summary

• Drives all N-channel synchronous power MOSFET stage
• Constant frequency current mode architecture
• Phase-lockable frequency capability

DC DC Switching Controllers Applications

• High efficiency 3.3V/15A step-down converter designs
• 1.8V/5A converters with pulse skip operation
• General purpose synchronous buck regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IUD' indicates the industrial temperature grade and QFN package variant when sourcing. Confirm that the '#TRPBF' designation corresponds to tape and reel packaging with lead-free finish. Cross-reference the manufacturer's official datasheet to ensure compatibility with your required input voltage range and thermal management requirements before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring a robust synchronous buck controller capable of driving external N-channel MOSFETs. It is suitable for applications needing flexible frequency synchronization via phase-locking. Ensure the design accommodates the specified input voltage limits and provides adequate thermal dissipation for the QFN package form factor during continuous operation.

DC DC Switching Controllers Part Context

This part belongs to the LTC3851 family of synchronous step-down switching regulator controllers. It shares architectural similarities with variants like the LTC3851EUD and LTC3851AIUD, differing primarily in temperature rating and package type. The IUD variant specifically targets industrial applications requiring reliable performance across a wide operating temperature range within a compact footprint.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3851EUD#TRPBF for commercial grade or LTC3851AIUD#TRPBF for extended temperature ranges, provided the package and electrical specifications remain compatible with the existing design constraints.