LT8390IUFD#TRPBF

Overview

The LT8390IUFD#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices Inc., housed in a 28-QFN (4x5) package. It operates with an input voltage range of 4 V to 60 V and supports up to 25 A output current. The device features a fixed switching frequency of 650 kHz and a quiescent current of 2.1 mA. It regulates output voltage, input, or output current when the input voltage is above, below, or equal to the output voltage. Operating temperatures range from -40°C to +125°C.

Feature Summary

• Synchronous four-switch topology enabling efficient buck, boost, and buck-boost operation across wide input-output voltage differentials.
• Integrated soft-start functionality to manage inrush currents during power-up sequences.
• Supports clock synchronization for multi-phase systems or noise reduction in sensitive environments.

Applications

• Solar panel to battery charging systems requiring MPPT and variable input voltages
• Industrial distributed power supply architectures
• Automotive electronics with wide input voltage ranges

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions meet specified temperature and humidity limits to maintain integrity. Cross-reference datasheet revisions to confirm compatibility with existing design specifications before procurement.

Selection Notes

Select this controller for applications requiring high efficiency across varying input and output voltage conditions. Consider thermal management requirements due to the 25 A capability and QFN package. Evaluate external component selection for inductor and capacitor ratings to support the 650 kHz switching frequency and maximum current specifications.

Part Context

Part of the LT8390 family of synchronous buck-boost controllers. Designed for high-efficiency power conversion where input voltage fluctuates significantly relative to the output. Commonly paired with evaluation boards like DC2431A for design validation.

Replacement Considerations

LT8390EUFD#WPBF offers similar functionality with potentially different packaging or temperature grade variations. Verify pinout and electrical specifications match before substitution.

FAQ

Does the LT8390 support phase synchronization?

Yes, the device supports clock synchronization for use in multi-phase configurations.

What is the maximum operating junction temperature?

The maximum operating junction temperature is +125°C.