LT3790IFE#TRPBF

Overview

The LT3790IFE#TRPBF is a synchronous four-switch buck-boost voltage and current regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5V to 60V, supporting both step-up and step-down topologies. The device features a switch frequency adjustable from 100kHz to 1MHz and includes integrated soft-start functionality. Packaged in a 38-lead TSSOP with an exposed pad for thermal management, it supports positive output configurations and offers comprehensive protection features including overcurrent limiting.

Feature Summary

• Synchronous four-switch architecture enabling efficient buck and boost operation
• Integrated control loop for simultaneous voltage and current regulation
• Adjustable switching frequency up to 1MHz for optimized component size
• Built-in soft-start mechanism to limit inrush current during startup

Applications

• Industrial power supplies requiring wide input voltage ranges
• Battery-powered systems with varying cell counts
• Automotive electronics operating under fluctuating load conditions
• Telecommunications infrastructure power modules

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when ordering. Confirm that the exposed pad (EP) variant requires appropriate PCB thermal design for heat dissipation. Ensure compatibility with the intended switching frequency range before finalizing component selection. Cross-reference the manufacturer's latest datasheet for any recent package or electrical specification updates prior to procurement.

Selection Notes

Select this controller for applications demanding high efficiency across wide input-output differential voltages. Consider the 38-TSSOP-EP package for its thermal performance in high-power density designs. Evaluate the need for external compensation components based on the desired loop stability. Verify that the maximum junction temperature rating aligns with the expected ambient operating environment and thermal constraints of the final assembly.

Part Context

This component belongs to the LT3790 family of synchronous buck-boost controllers. It shares architectural similarities with other Linear Technology power management ICs designed for robust industrial applications. The device complements the broader portfolio of DC-DC controllers offering flexible topology support. Its design focuses on simplifying bill-of-materials by integrating multiple switches and control functions into a single compact package.

Replacement Considerations

• LT3790EFE#TRPBF