LT8390IUFD#PBF

Overview

The LT8390IUFD#PBF is a synchronous 4-switch buck-boost DC/DC controller manufactured by Analog Devices Inc. It regulates output voltage, input current, or output current when the input voltage is above, below, or equal to the output voltage. The device operates with an input voltage range of 4V to 60V and supports switching frequencies from 190kHz to 630kHz. It features a 28-pin QFN package with exposed pad, operating temperatures from -40°C to +125°C, and includes soft-start functionality.

Feature Summary

• Synchronous four-switch buck-boost topology for continuous conduction mode operation
• Regulates output voltage, input current, or output current regardless of input-to-output voltage relationship
• Integrated soft-start capability to limit inrush current during startup

Applications

• Solar panel to battery charging systems
• Wide input voltage DC/DC conversion applications
• Industrial power supplies requiring flexible input/output configurations

Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when reviewing official distributor catalogs. Confirm that the IUFD variant matches the required temperature grade and package dimensions against the latest Analog Devices datasheet before finalizing procurement orders.

Selection Notes

Select this component when input voltage may fluctuate significantly around the target output voltage. Ensure the application requires synchronous rectification for improved efficiency. Verify that the 28-QFN package footprint fits within the available PCB area constraints.

Part Context

This part belongs to the LT8390 family of buck-boost controllers designed for high-efficiency power conversion. It serves as a core control IC for managing power flow in systems where input sources vary widely relative to the load requirements.

Replacement Considerations

LT8390IUFD#TRPBF offers identical electrical specifications but utilizes tape-and-reel packaging instead of tubes.