LT8390AHUFD#TRPBF

Overview

The LT8390AHUFD#TRPBF is a synchronous four-switch buck-boost DC/DC controller from Analog Devices. It operates with an input voltage range of 4V to 60V and supports output voltages from 0V to 60V. The device features a fixed switching frequency of 2MHz, with spread spectrum capability for EMI reduction. It functions within a junction temperature range of -40°C to 150°C. The component utilizes a 28-lead QFN (4x5) package and includes integrated soft start, current limit, and clock synchronization features.

Feature Summary

• Synchronous four-switch topology supporting buck, boost, and pass-through modes
• Integrated spread spectrum modulation for electromagnetic interference reduction
• Clock synchronization capability for multi-phase or parallel system operation
• Built-in soft start and current limit protection mechanisms

Applications

• Industrial power supply systems requiring wide input voltage ranges
• Battery-powered equipment with varying cell configurations
• Automotive electronics operating under fluctuating load conditions
• Distributed power architectures in telecommunications infrastructure

Procurement Notes

Verify the suffix TRPBF indicates tape and reel packaging when ordering. Confirm the AH grade specifies the required temperature and performance characteristics for your application environment. Ensure compatibility with the 28-QFN footprint during PCB layout. Cross-reference the datasheet for specific thermal requirements associated with the selected operating conditions.

Selection Notes

Select this controller for applications demanding high efficiency across wide input-output voltage differentials. The 2MHz frequency allows for smaller passive components compared to lower-frequency alternatives. Consider the thermal dissipation capabilities of the QFN package relative to your expected load currents. Evaluate the need for external synchronization signals if multiple converters operate in close proximity.

Part Context

This component belongs to the LT8390 family of synchronous buck-boost controllers designed by Analog Devices. The family offers various grades and packaging options to suit different industrial and automotive standards. The LT8390 series is characterized by its ability to handle high voltages while maintaining stable regulation in challenging electrical environments.

Replacement Considerations

LT8390AHUFD#PBF provides identical electrical specifications but differs in packaging format.