LTC3728LEGN#PBF

DC DC Switching Controllers Overview

The LTC3728LEGN#PBF is a dual high-performance synchronous step-down switching regulator controller from Analog Devices. It operates with an input voltage range of 3.5V to 30V and supports two independent output channels. The device features a fixed switching frequency of 550kHz and delivers up to 25A total output current capability when paired with external N-channel MOSFETs. It utilizes a constant frequency current mode architecture for precise regulation. The component is housed in a 28-lead SSOP package and is designed for operation within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck controller architecture driving all N-channel power stages
• Constant frequency current mode control for stable loop performance
• Integrated soft-start, enable, and power good monitoring functions
• Low quiescent current design supporting efficient standby modes

DC DC Switching Controllers Applications

• Industrial equipment power distribution systems
• Telecommunications infrastructure voltage regulation
• Point-of-load conversion for embedded computing modules
• Automotive electronics power management subsystems

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature grade. Ensure compatibility with external MOSFET gate drive requirements. Confirm RoHS compliance status through manufacturer datasheets prior to integration. Validate supply chain authenticity via authorized distributors only.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring dual isolated or non-isolated outputs from a single input rail. Evaluate thermal management needs based on total load current and PCB copper area. Compare against family members like the LTC3728LXCUH if automotive qualification or different packaging is required. Ensure external components support the 550kHz switching frequency constraints.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L series of dual synchronous buck controllers. It shares architectural similarities with other parts in the family but differs in package configuration and specific electrical ratings. The series is designed for applications demanding high efficiency and compact solution size in power management circuits.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include other variants within the LTC3728L family such as the LTC3728LEUH or LTC3728LCGN, provided pinout and electrical specifications match the design requirements. Verify functional equivalence before substitution.