LTC3838EUHF-2#TRPBF

DC DC Switching Controllers Overview

The LTC3838EUHF-2#TRPBF is a dual-channel, PolyPhase synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5 V to 38 V and supports output voltages from 600 mV to 5.5 V per channel. The device features a switching frequency adjustable between 200 kHz and 2 MHz, with a quiescent current of 15 µA. Packaged in a 38-lead QFN (5mm x 7mm) with an exposed pad, it is designed for high-efficiency power management applications requiring precise regulation and multi-phase capability.

DC DC Switching Controllers Feature Summary

• Dual independent channels capable of driving all N-channel power MOSFETs
• PolyPhase synchronization allows combining channels into a single multi-phase output configuration using an external reference
• Integrated synchronous rectification for enhanced efficiency

DC DC Switching Controllers Applications

• High-density server and workstation power distribution
• Industrial equipment requiring multi-rail power sequencing
• Communication infrastructure base stations
• Portable medical devices needing efficient dual-output regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when ordering. Confirm that the QFN-38 package matches the target PCB footprint, including the thermal pad dimensions. Ensure the design accounts for the 4.5 V minimum input voltage requirement. Check local distributor availability as supply may be restricted in certain regions. Validate RoHS compliance status through official manufacturer documentation prior to final procurement.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated outputs or combined multi-phase high-current delivery are required from a single controller. The wide input voltage range suits bus voltages up to 38 V. Consider the 2 MHz maximum switching frequency for minimizing passive component size. Evaluate thermal performance requirements given the QFN package constraints. Compare against single-channel alternatives if only one regulated rail is necessary to optimize board space.

DC DC Switching Controllers Part Context

This part belongs to the LTC3838 series of PolyPhase controllers. It shares architectural similarities with the LTC3838-1 but provides two distinct control channels instead of one. The EUHF designation specifies the industrial temperature grade and QFN package variant. It complements other Analog Devices PMIC solutions for complex power architectures.

DC DC Switching Controllers Replacement Considerations

The LTC3838EUHF-1#TRPBF offers a single-channel alternative with identical electrical characteristics per channel. For direct pin-compatible upgrades, verify if the application requires dual outputs; otherwise, the single-channel version may suffice. No other direct substitutes are confirmed in public documentation.