LT3790EFE

Overview

The LT3790EFE 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 2.7V to 60V, supporting both step-down and step-up configurations. The device integrates high-side and low-side gate drivers for external N-channel MOSFETs, enabling efficient power conversion in diverse applications. Key electrical parameters include a switching frequency up to 1MHz and precise regulation capabilities for both voltage and output current modes.

Feature Summary

• Synchronous four-switch architecture for bidirectional energy flow
• Integrated high-side and low-side gate drivers for external MOSFETs
• Dual-mode regulation capability for voltage and current control

Applications

• Battery-powered systems requiring wide input voltage ranges
• Industrial power supplies with variable source conditions
• Automotive electronics operating under fluctuating load voltages

Procurement Notes

Verify the specific suffix (EFE#PBF vs TRPBF) against the datasheet to confirm package type and tape-and-reel configuration. Ensure RoHS compliance status matches project requirements, as some variants may be lead-containing. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

Selection Notes

Select this component when designing circuits that require seamless transition between buck and boost modes without changing topology. Consider the external MOSFET selection carefully to match the integrated driver capabilities and thermal requirements. Evaluate the need for current-mode regulation versus standard voltage-mode control based on load characteristics.

Part Context

This part belongs to the LT3790 family of regulators, designed for flexible power management solutions. It serves as a core controller for complex DC-DC conversion tasks where input voltages may exceed or fall below output requirements. The family emphasizes efficiency and compactness in space-constrained electronic designs.

Replacement Considerations

Direct substitutes are limited due to the specific four-switch synchronous buck-boost architecture. Review Analog Devices' newer PMIC families for potential upgrades, but verify pin compatibility and control loop stability before replacement.