LTC3728LCUH#TRPBF

DC DC Switching Controllers Overview

The LTC3728LCUH#TRPBF is a dual high-performance step-down switching regulator controller from Analog Devices Inc., designed to drive all N-channel synchronous power MOSFET stages. It features a constant frequency current mode architecture with a switchable frequency range of 260kHz to 550kHz. The device supports an input voltage range of 4.5V to 28V and provides two positive outputs. Key control characteristics include enable, power good, and soft-start functions. It operates within a temperature range of 0°C to 85°C and is housed in a 32-WFQFN package with a bare thermal pad.

DC DC Switching Controllers Feature Summary

• Dual channel architecture for independent or interleaved synchronous buck regulation
• Constant frequency current mode control for stable operation across load ranges
• Integrated soft-start, enable, and power good monitoring capabilities
• Supports external synchronization via phase-lockable frequency up to 550kHz

DC DC Switching Controllers Applications

• High efficiency dual output DC/DC conversion systems
• Industrial equipment requiring synchronized multi-phase power supplies
• Automotive electronics utilizing the automotive-grade variant specifications
• Telecommunications infrastructure power management modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'CUH' against the manufacturer's official datasheet to confirm the exact operating temperature range and material compliance status. Ensure the ordering part number matches the required package type and tape/reel configuration. Cross-reference the component revision history for any recent parameter updates before finalizing procurement orders.

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 flexible switching frequencies between 260kHz and 550kHz. Consider the 32-pin QFN package for thermal management requirements. Validate that the input voltage range of 4.5V to 28V aligns with the system power rail specifications.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L family of dual high-performance step-down switching regulator controllers. It is engineered to drive all N-channel synchronous power MOSFET stages, offering a robust solution for complex power distribution networks. The family includes various package options and temperature grades to suit different industrial and commercial applications.

DC DC Switching Controllers Replacement Considerations

Direct substitutes within the same family include LTC3728LEGN#PBF and LTC3728LIUH. Verify pin compatibility and thermal performance differences when transitioning between package types such as SSOP-28 or QFN-32 variants.