LTC3728LIGN-1#PBF

DC DC Switching Controllers Overview

The LTC3728LIGN-1#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 4.5 V to 28 V and supports output voltages of 3.3 V and 5 V. The device delivers up to 25 A of output current across two independent channels. It utilizes a constant frequency current mode architecture with a phase-lockable switching frequency of 550 kHz. The component features low quiescent supply current of 450 uA and precise load regulation of 0.1%. It is housed in a 28-pin SSOP package and functions within a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual-channel synchronous buck controller driving all N-channel MOSFET stages
• Constant frequency current mode architecture with phase-lock capability
• Integrated shutdown, power good, and soft-start control features

DC DC Switching Controllers Applications

• High efficiency dual 5V/3.3V step-down converter designs
• Industrial power management systems requiring synchronized multi-phase outputs
• Embedded systems needing low noise and high precision voltage regulation

DC DC Switching Controllers Procurement Notes

Verify availability status carefully as this part number may be subject to limited supply or factory special orders. Confirm the specific suffix matches design requirements. Check for recent Product Change Notices regarding packaging or electrical specifications before finalizing procurement plans.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring dual isolated or non-isolated outputs from a single input source. Ensure external components support the 550 kHz switching frequency. Verify that the SSOP-28 package fits the thermal and spatial constraints of the target PCB layout compared to QFN alternatives.

DC DC Switching Controllers Part Context

This component belongs to the LTC3728L series, designed for high-density power conversion. It complements other PMIC solutions by providing precise current mode control. The device integrates essential protection and timing features required for robust industrial and commercial power supplies without external complexity.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate cross-referencing with similar dual-channel buck controllers only after verifying pin compatibility and electrical parameter alignment.