LTC3728LEUH#PBF

DC DC Switching Controllers Overview

The LTC3728LEUH#PBF is a dual high-performance step-down switching regulator controller manufactured by Analog Devices Inc. It operates with an input voltage range of 5.2V to 28V and supports output voltages of 3.3V or 5V. The device features a constant frequency current mode architecture allowing for a phase-lockable switching frequency up to 550kHz. It is designed to drive all N-channel synchronous power MOSFET stages, providing efficient DC-to-DC conversion in a compact 32-pin QFN package.

DC DC Switching Controllers Feature Summary

• Dual channel architecture for independent or synchronized power rail generation
• Constant frequency current mode control for stable regulation
• Phase-lockable switching frequency capability up to 550kHz
• Supports external frequency synchronization for system timing alignment

DC DC Switching Controllers Applications

• High efficiency dual 5V/3.3V step-down converter designs
• Systems requiring external frequency synchronization
• Embedded power management for industrial equipment
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix and package type against the official datasheet to ensure compatibility with your PCB footprint and thermal requirements. Confirm that the component meets the required operating temperature range for your application environment. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing the design.

DC DC Switching Controllers Selection Notes

Select this controller when dual output buck conversion is required with precise frequency synchronization capabilities. It is suitable for applications needing high efficiency across a wide input voltage range. Ensure the external MOSFETs are rated for the expected current and voltage stresses. Consider thermal dissipation requirements given the QFN package constraints.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L family of dual synchronous buck controllers. It is part of Analog Devices' portfolio of power management integrated circuits designed for demanding industrial and communication applications. The series offers flexibility in configuration through external component selection.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same family include LTC3728LIUH#PBF and LTC3728LCUH#PBF. Verify pin compatibility and electrical parameter differences before substitution.