LTC3728LIGN#PBF

DC DC Switching Controllers Overview

The LTC3728LIGN#PBF is a dual high-performance synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 30V and supports output currents up to 25A per channel. The device features a fixed switching frequency of 550kHz and offers two independent outputs, typically configured for 3.3V or 5V. Packaged in a 28-lead SSOP with a minimum operating temperature of -40°C and maximum of +85°C, it includes shutdown functionality and exhibits a load regulation of 0.1%.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture driving all N-channel synchronous power MOSFET stages
• Constant frequency current mode control architecture
• Integrated soft start and power good monitoring capabilities

DC DC Switching Controllers Applications

• Point-of-load regulation for industrial systems
• Telecommunications infrastructure power distribution
• High-density server and computing board power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging configuration. Confirm the LIGN package designation matches the required SSOP-28 footprint on the target PCB layout. Ensure the design accounts for the restricted supply status often associated with this component series. Cross-reference the datasheet revision to validate thermal performance parameters against the intended application environment.

DC DC Switching Controllers Selection Notes

Select this controller when a dual-output synchronous buck solution is required with fixed 550kHz operation. It is suitable for designs needing wide input voltage ranges up to 30V. Consider the SSOP-28 package constraints for thermal management and board space. Verify that the external MOSFET selection aligns with the 25A output capability requirements.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L family of dual synchronous step-down controllers. It shares functional similarities with other members like the LTC3728LXCUH but differs in package type and specific electrical tolerances. The family is designed for applications requiring efficient, multi-rail power generation from a single intermediate bus voltage.

DC DC Switching Controllers Replacement Considerations

The LTC3728LIGN-1#PBF is a related variant within the same product family. Evaluate pin compatibility and parameter differences before substitution.