LTC3728LEUH-1#PBF

DC DC Switching Controllers Overview

The LTC3728LEUH-1#PBF is a dual high-performance step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 5.2 V to 28 V and provides two independent outputs, typically configured for 3.3 V and 5 V rails. The device supports output currents up to 5 A per channel and utilizes a constant frequency current mode architecture with a phase-lockable switching frequency of up to 550 kHz. Packaged in a 32-pin QFN, it drives all N-channel synchronous power MOSFET stages.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck controller architecture driving N-channel MOSFETs
• Constant frequency current mode control with phase-lockable operation
• Integrated external frequency synchronization capability

DC DC Switching Controllers Applications

• High efficiency dual rail power distribution systems
• Industrial equipment requiring synchronized multi-phase regulation
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and electrical characteristics. Ensure the component matches the required thermal performance for the intended application environment. Cross-reference the datasheet revision to validate feature availability and operating conditions before integration into final designs.

DC DC Switching Controllers Selection Notes

Select this controller when designing dual-output synchronous buck converters requiring precise current mode control. It is suitable for applications needing external frequency synchronization to reduce EMI or align with system clocks. Consider the 32-pin QFN package constraints for thermal management and PCB layout requirements during the design phase.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L series of dual synchronous step-down controllers. It is designed to replace older discrete solutions or single-channel regulators by integrating control logic for two independent power stages. The part is categorized under PMIC DC/DC switching regulators within the Analog Devices portfolio.

DC DC Switching Controllers Replacement Considerations

Consult official substitution guides for compatible alternatives such as the LTC3728IUH-1#PBF or other members of the LTC3728 family. Verify that any substitute maintains identical pin configurations and electrical specifications to ensure direct compatibility without circuit redesign.