LT8390EUFD#WPBF

Overview

The LT8390EUFD#WPBF is a synchronous four-switch buck-boost DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4V to 60V and supports a switching frequency between 190kHz and 630kHz. The device features a 28-WFQFN package with exposed pad, rated for junction temperatures from -40°C to +125°C. Key electrical specifications include a maximum duty cycle of 95% and a supply voltage range of 4V to 60V. It provides one positive output configuration with integrated soft start, current limit, and clock synchronization capabilities.

Feature Summary

• Synchronous four-switch topology enabling regulation when input voltage is above, below, or equal to the output voltage
• Integrated spread spectrum modulation to minimize electromagnetic interference emissions
• Pass-through mode capability that eliminates switching noise during direct input-to-output transfer
• Comprehensive control features including current limiting, enable, frequency control, phase control, power good, and soft start

Applications

• Solar panel to battery charger systems
• Industrial distributed power supplies
• Automotive electronics requiring wide input voltage ranges
• Battery-powered equipment with varying source voltages

Procurement Notes

Verify the specific suffix WPBF indicates tube packaging when reviewing official distributor documentation. Confirm RoHS compliance status through the manufacturer's material declaration. Ensure the ordering part number matches the exact temperature grade and package variant required for the design. Cross-reference the datasheet revision date against the component marking to guarantee specification alignment. Validate that the supplier provides the correct EDA models compatible with the 28-QFN footprint.

Selection Notes

Select this controller for designs requiring seamless transition between buck and boost modes without discontinuity. Consider the 28-QFN package for applications needing compact surface-mount solutions with thermal performance. Evaluate the programmable switching frequency range to optimize inductor size and efficiency targets. Verify that the external component selection supports the required input and output voltage levels within the specified operating temperature range.

Part Context

The LT8390 series represents Analog Devices' high-performance synchronous buck-boost controllers designed for versatile power conversion needs. This specific model belongs to the LT8390 family, which emphasizes efficiency and low electromagnetic interference. The EUFD#WPBF designation identifies the commercial temperature grade version housed in a 28-lead QFN package. It serves as a core component for non-isolated DC/DC converters in modern electronic systems.

Replacement Considerations

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