LTC3728IG#TRPBF

DC DC Switching Controllers Overview

The LTC3728IG#TRPBF is a dual high-performance step-down switching regulator controller designed to drive all N-channel synchronous power MOSFET stages. It operates with a fixed switching frequency of 550 kHz and supports an input voltage range from 4 V to 30 V. The device provides two independent positive outputs, capable of delivering up to 25 A per channel. It features a constant frequency current mode architecture with lockable phase synchronization. The component is housed in a 28-lead SSOP package and functions within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual output capability for driving separate synchronous buck stages
• Constant frequency current mode architecture for stable regulation
• Lockable 550 kHz switching frequency with phase synchronization support
• Integrated soft start, enable, and power good monitoring functions

DC DC Switching Controllers Applications

• Point-of-load regulation in telecommunications infrastructure
• High-density server and workstation power distribution
• Industrial equipment requiring dual isolated or non-isolated rails
• Networking switches and routers with multiple voltage requirements

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IG variant corresponds to the industrial temperature grade (-40°C to +85°C) and SSOP-28 package. Ensure compatibility with external MOSFET gate drive requirements and inductor selection based on the 550 kHz operating frequency. Cross-reference datasheet revisions for any pinout or electrical specification updates prior to final design approval.

DC DC Switching Controllers Selection Notes

Select this controller when dual independent buck converters are required from a single IC solution. It is suitable for applications needing high efficiency through synchronous rectification and precise load regulation. Consider the 30 V maximum input voltage limit and 25 A output current capacity per channel. Evaluate thermal management needs due to the SSOP-28 package constraints compared to larger QFN options.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728 family of dual synchronous buck controllers from Analog Devices. It shares architectural similarities with other members like the LTC3728EUH but differs in package type (SSOP vs QFN) and temperature rating. The series is designed for applications requiring compact footprints and high performance in multi-rail power systems.

DC DC Switching Controllers Replacement Considerations

LTC3728EG#PBF offers similar functionality in a leaded SSOP package with industrial temperature range. LTC3728EUH#TRPBF provides the same electrical performance in a 32-QFN package for higher thermal dissipation. Verify pin-to-pin compatibility and thermal characteristics when substituting.