LTC3859IFE#TRPBF

DC DC Switching Controllers Overview

The LTC3859IFE#TRPBF is a triple-output synchronous DC/DC switching regulator controller designed for high-performance power management. It integrates three independent channels capable of Buck, Buck-Boost, and SEPIC topologies to drive all N-channel power MOSFET stages. The device operates with an input voltage range of 4.5 V to 38 V and supports output voltages from 800 mV up to 24 V per channel. It features a programmable switching frequency between 75 kHz and 850 kHz. The controller offers low quiescent current of 55 uA and precise load regulation of 0.01%. It is housed in a 38-pin TSSOP-EP package and functions within an industrial temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Integrates three independent channels supporting versatile Buck, Buck-Boost, and SEPIC converter topologies.
• Drives all N-channel power MOSFET stages for efficient synchronous rectification across multiple outputs.
• Provides advanced control features including soft start, tracking, and power good signals for complex sequencing requirements.

DC DC Switching Controllers Applications

• Industrial equipment requiring multi-rail power distribution
• Telecommunications infrastructure power systems
• Embedded computing platforms with mixed voltage requirements

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm that the IFE variant corresponds to the TSSOP-EP package type required for your thermal and layout constraints. Ensure compatibility with the intended switching frequency range and input voltage specifications for your target application design.

DC DC Switching Controllers Selection Notes

Select this component when a single IC must manage three distinct output rails with varying topology needs. It is suitable for designs requiring high efficiency and precise voltage regulation across multiple loads. Consider the thermal performance of the TSSOP-EP package and the need for external N-channel MOSFETs to handle the specified output currents.

DC DC Switching Controllers Part Context

This part belongs to the LTC3859 family of triple-output controllers from Analog Devices. It shares core architecture with variants like the LTC3859AIUHF but differs in package style and shipping configuration. The family is designed for applications demanding compact solutions for multi-phase or multi-output power conversion systems.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate other members of the LTC3859 series for pin-compatible alternatives if different packaging or temperature grades are required.