LTC1628IUH#PBF

DC DC Switching Controllers Overview

The LTC1628IUH#PBF is a high-efficiency, dual-phase synchronous buck switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 36V and supports output currents up to 20A per phase. The device features a fixed switching frequency range of 150kHz to 300kHz and includes integrated soft-start functionality. It is housed in a 32-lead QFN (5mm x 5mm) package with an exposed thermal pad for efficient heat dissipation. The controller supports remote sensing for improved load regulation and operates across a temperature range of -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Dual-phase synchronous buck control architecture for high current delivery
• Integrated soft-start capability to limit inrush current during startup
• Remote sense inputs for accurate voltage regulation at the load point
• Wide input voltage compatibility supporting various power supply rails

DC DC Switching Controllers Applications

• Industrial distributed power systems requiring dual voltage rails
• Telecommunications infrastructure power management
• Network equipment powering digital signal processors and memory
• Point-of-load conversion for high-density computing modules

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the 32-QFN package dimensions match your PCB footprint design. Ensure the operating temperature range meets your environmental requirements. Cross-reference the datasheet revision date to ensure compatibility with your reference designs. Validate that the external MOSFET selection aligns with the controller's drive capabilities.

DC DC Switching Controllers Selection Notes

Select this component when dual independent outputs are required from a single controller IC. It is suitable for applications needing high efficiency at moderate switching frequencies. Consider the thermal performance of the QFN package for your enclosure design. Evaluate the need for remote sensing against trace resistance in your layout. Compare against single-phase controllers if total current requirements are lower.

DC DC Switching Controllers Part Context

The LTC1628 belongs to Linear Technology's family of high-performance synchronous buck controllers. It is designed to replace older discrete solutions or single-phase controllers in high-current applications. The part is often paired with evaluation boards like DC392A-A for initial prototyping. It shares architectural similarities with other LTC dual-phase controllers but offers specific frequency and current characteristics tailored for industrial use.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.