LT8390EUFD#WTRPBF

Overview

The LT8390EUFD#WTRPBF is a synchronous 4-switch buck-boost DC/DC controller from Analog Devices Inc., designed for high-efficiency power conversion. It operates with an input voltage range of 0 to 48 V and supports output voltages up to 25 V at currents reaching 5 A, delivering up to 125 W of output power. The device features a switching frequency between 190 kHz and 630 kHz, achieving efficiencies up to 98%. Packaged in a 28-QFN (4x5) format, it includes spread spectrum technology to reduce EMI and supports clock synchronization.

Feature Summary

• Synchronous four-switch buck-boost topology enables regulation across input voltages above, below, or equal to the output voltage.
• Integrated spread spectrum modulation reduces electromagnetic interference without requiring external filtering components.
• Supports clock synchronization for multi-phase operation or noise avoidance in complex systems.
• Includes comprehensive control features such as current limiting, soft start, and power good indication.

Applications

• Solar panel to battery charger systems
• Industrial automation power supplies
• Telecommunications infrastructure equipment
• Automotive electronics and EV charging modules

Procurement Notes

Verify the exact suffix #WTRPBF confirms the tape-and-reel packaging variant, distinct from tube-packaged equivalents like #WPBF. Ensure compatibility with the intended PCB footprint for the 28-QFN package. Confirm that the operating temperature range meets the specific environmental requirements of the target application. Cross-reference the datasheet revision date to ensure all electrical characteristics align with the latest design specifications.

Selection Notes

Select this component when a non-isolated buck-boost solution is required for wide input voltage ranges. It is suitable for applications demanding high efficiency and low EMI, such as renewable energy systems. Consider the 28-QFN package size constraints and thermal management needs. Evaluate if the integrated spread spectrum feature sufficiently meets EMI standards without additional filtering. Compare against isolated topologies if galvanic isolation is strictly required by the system architecture.

Part Context

The LT8390 series represents Analog Devices' approach to high-power, non-isolated DC/DC conversion. The EUFD variant specifically denotes the extended temperature grade and QFN packaging. This controller is part of a broader family including evaluation boards like DC2825A and DC2457A, which facilitate rapid prototyping. It complements other Linear Technology power management solutions by offering robust performance in compact form factors for modern electronic designs.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Direct replacements should be verified through official Analog Devices cross-reference tools or distributor databases to ensure pinout and electrical parameter compatibility.