LTC7817EUHF#PBF

DC DC Switching Controllers Overview

The LTC7817EUHF#PBF is a triple-output synchronous DC/DC switching controller designed to drive all N-channel power MOSFET stages. It supports Buck, Buck, and Boost topologies with an adjustable switching frequency range from 100 kHz to 3 MHz. The device operates on a supply voltage of 4.5 V to 40 V and features a low operating supply current of 14 µA. It utilizes a constant-frequency current mode architecture that allows for phase synchronization up to 3 MHz.

DC DC Switching Controllers Feature Summary

• Supports three independent output channels configured as dual buck and one boost converter
• Enables high-speed phase synchronization via external clock input up to 3 MHz
• Operates with low quiescent current for improved efficiency in standby modes

DC DC Switching Controllers Applications

• Industrial automation systems requiring multiple isolated or non-isolated rails
• Telecommunications infrastructure power distribution units
• Automotive electronic control units with mixed voltage requirements

DC DC Switching Controllers Procurement Notes

Verify the specific suffix and package variant against official Analog Devices documentation before ordering. Confirm availability status through authorized distributors as supply levels may fluctuate. Ensure compatibility with existing PCB footprints and thermal management designs. Cross-reference pin assignments to avoid integration errors during prototyping.

DC DC Switching Controllers Selection Notes

Select this component when designing multi-rail power systems requiring synchronized switching to minimize electromagnetic interference. Consider the 40V maximum input rating and 3MHz frequency capability for compact magnetics design. Evaluate thermal performance based on the QFN-38 package constraints and expected load currents across all three channels.

DC DC Switching Controllers Part Context

This part belongs to the LTC7817 family of triple-output controllers from Analog Devices. It shares architectural similarities with other high-performance PMICs but is distinct in its specific combination of dual buck and single boost outputs. The EUHF#PBF designation indicates a lead-free, RoHS-compliant version in a QFN-38 package.

DC DC Switching Controllers Replacement Considerations

Direct substitutes include the LTC7815 series for similar triple-output capabilities, though switching frequencies and input voltage ranges differ. Verify functional equivalence regarding control loop stability and pinout compatibility before swapping.