LTC3891HUDC#TRPBF

DC DC Switching Controllers Overview

The LTC3891HUDC#TRPBF is a synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 60V and supports output voltages from 800mV to 24V. The device features a switch frequency adjustable between 75kHz and 750kHz, with a typical quiescent current of 50µA. It is housed in a 20-lead QFN package (3mm x 4mm) with exposed pad and rated for operation from -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology driving all N-channel power MOSFET stages
• Low no-load quiescent current extending battery life
• OPTI-LOOP compensation for optimized transient response
• Independent TRACK/SS pins for synchronized start-up

DC DC Switching Controllers Applications

• Automotive always-on systems
• Distributed DC power systems
• Battery-operated digital devices

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'HUDC' against official Analog Devices documentation to confirm temperature grade and tape-and-reel packaging configuration. Ensure compatibility with required thermal dissipation standards for the QFN-20 package. Cross-reference datasheet revision history for any pinout or electrical parameter updates prior to final procurement.

DC DC Switching Controllers Selection Notes

Select this component for applications requiring high input voltage up to 60V with low standby power consumption. The wide frequency range allows optimization for size versus efficiency trade-offs. Consider the 20-QFN package for compact designs requiring efficient heat dissipation through the exposed pad.

DC DC Switching Controllers Part Context

This part belongs to the LTC3891 family of synchronous step-down controllers. It shares architectural similarities with other members like the LTC3891IFE but differs in package type and industrial temperature rating. The series is designed for high-efficiency power conversion in space-constrained environments.

DC DC Switching Controllers Replacement Considerations

LTC3891IFE#PBF offers identical electrical performance in a TSSOP-EP-20 package. LTC3891IUDC#TRPBF provides the same functionality in a commercial temperature grade QFN-20 package.