LTC3859AEFE#TRPBF

DC DC Switching Controllers Overview

The LTC3859AEFE#TRPBF is a high-performance triple output synchronous DC/DC switching regulator controller designed to drive all N-channel power MOSFET stages. It features a constant frequency current mode architecture with a phase-lockable switching frequency range of 75 kHz to 850 kHz. The device operates from a wide input supply voltage range of 4.5 V to 38 V, extending down to 2.5 V when biased from an auxiliary source or boost output. It supports three independent outputs with adjustable voltages ranging from 0.8 V to 24 V for buck modes and up to 60 V for the boost stage. The controller includes low quiescent current operation at 55 µA and thermal shutdown protection.

DC DC Switching Controllers Feature Summary

• Supports triple output configurations combining dual buck and single boost topologies
• Enables precise load regulation through constant frequency current mode control architecture
• Provides improved light-load efficiency via enhanced Burst Mode operation capabilities

DC DC Switching Controllers Applications

• Industrial systems requiring multiple regulated voltage rails
• Automotive electronics utilizing wide input voltage ranges
• Telecommunications infrastructure power distribution networks

DC DC Switching Controllers Procurement Notes

Verify the specific suffix AEFE against the manufacturer datasheet to confirm the exact temperature grade and package variant. Ensure the tape and reel packaging matches your automated assembly requirements. Cross-reference the part number with official Analog Devices documentation to validate pinout compatibility and electrical specifications before integration into production designs.

DC DC Switching Controllers Selection Notes

Select this component when designing power supplies that require simultaneous buck and boost regulation from a single controller. It is suitable for applications needing wide input voltage flexibility and low standby power consumption. Consider the TSSOP-EP-38 package for thermal management needs in space-constrained layouts requiring surface mount installation.

DC DC Switching Controllers Part Context

This controller belongs to the LTC3859 family of synchronous regulators. It shares architectural similarities with other members like the LTC3859EFE but differs in specific grading and packaging options. The series is characterized by its ability to manage complex multi-output power structures efficiently within industrial and automotive environments.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC3859EFE and LTC3859AIUHF#TRPBF. Verify package compatibility between TSSOP-EP-38 and QFN-38 variants if physical footprint changes are permissible. Check temperature ratings and switching frequency limits to ensure functional equivalence.