LTC3728LZEUH#TRPBF

DC DC Switching Controllers Overview

The LTC3728LZEUH#TRPBF is a dual high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5V to 28V and supports output voltages of 3.3V and 5V with a maximum output current of 25A per channel. The device features a constant frequency current mode architecture allowing phase-lockable switching frequencies up to 550kHz. It utilizes a 32-lead QFN package rated for operation between -40°C and +125°C, designed for driving all N-channel synchronous power MOSFET stages.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck controller architecture
• Phase-lockable constant frequency current mode operation
• Integrated soft start and power good monitoring
• Automotive-grade thermal and electrical specifications

DC DC Switching Controllers Applications

• Automotive infotainment systems
• Industrial point-of-load regulation
• Telecommunications equipment power distribution
• High-density server voltage translation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix ZEUH against official Analog Devices documentation to confirm automotive qualification status and tape-and-reel packaging configuration. Ensure compatibility with required N-channel MOSFET gate drive requirements and external component selection for the target switching frequency. Cross-reference the datasheet revision date to validate parameter accuracy before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated or non-isolated outputs are required from a single input rail in space-constrained designs. The wide input voltage range accommodates various bus architectures. Consider the 32-QFN footprint for PCB layout constraints. Evaluate thermal dissipation requirements given the high current capability and ensure adequate copper area for heat spreading during operation.

DC DC Switching Controllers Part Context

This part belongs to the LTC3728L family of dual synchronous step-down controllers. It shares architectural similarities with other members like the LTC3728LEGN-1 but differs in package type and temperature rating. The series is designed for applications requiring high efficiency and precise voltage regulation across multiple rails simultaneously.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3728LCUH#TRPBF and LTC3728LIUH#TRPBF. Verify pinout compatibility and thermal performance differences when replacing with these variants. Ensure that any alternative maintains the same dual-channel control logic and N-channel MOSFET drive capabilities.