LTC3728IUH#TRPBF

DC DC Switching Controllers Overview

The LTC3728IUH#TRPBF is a dual high-performance step-down switching regulator controller from Analog Devices. It operates with an input voltage range of 4.5V to 28V and supports two independent outputs. The device features a fixed switching frequency of 550kHz, which can be synchronized to an external clock. It provides a maximum duty cycle of 99.4% and includes integrated soft start functionality. The component is housed in a 32-lead QFN package and is rated for operation between -40°C and +85°C.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture supporting independent synchronous buck regulation
• Integrated N-channel MOSFET driver capability for all power stages
• Fixed 550kHz switching frequency with external synchronization option
• Built-in soft start mechanism to limit inrush current during startup

DC DC Switching Controllers Applications

• Industrial distributed power systems
• Point-of-load (POL) voltage regulation
• Telecommunications equipment power supplies
• Embedded computing board power management

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the 'I' temperature grade matches the required operational environment. Ensure the 32-QFN footprint aligns with the PCB design constraints before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring two isolated or non-isolated output rails from a single input source. It is suitable where space efficiency is critical due to the compact QFN form factor. Consider the 550kHz frequency for balancing EMI performance against passive component size requirements.

DC DC Switching Controllers Part Context

This part belongs to the LTC3728L family of dual synchronous step-down controllers. It shares functional similarities with other members like the LTC3728EUH but differs in temperature rating and package configuration. The series is designed for high-efficiency power conversion in dense electronic assemblies.

DC DC Switching Controllers Replacement Considerations

The LTC3728EUH#TRPBF serves as a direct pin-compatible alternative within the same family. Verify that the temperature range specifications meet the application requirements before substituting.