LTC3858IUFD-1#PBF

DC DC Switching Controllers Overview

The LTC3858IUFD-1#PBF is a low quiescent current, dual channel, 2-phase synchronous step-down controller manufactured by Analog Devices Inc. It operates with an input voltage range of 4V to 38V and supports output voltages from 800mV to 24V. The device features a switching frequency range of 75kHz to 850kHz and utilizes a 32-lead QFN package (5mm x 5mm). Key electrical parameters include a maximum static current of 8µA and a working supply current of 170µA. It provides two independent outputs capable of driving up to 25A per phase.

DC DC Switching Controllers Feature Summary

• Dual-channel architecture supporting independent or interleaved operation for high-current applications
• Ultra-low quiescent current design optimizing efficiency during light-load conditions
• Integrated soft-start and power-good monitoring for controlled startup and system supervision
• Supports all N-channel synchronous MOSFET stages for improved efficiency

DC DC Switching Controllers Applications

• High-efficiency multi-phase DC/DC conversion systems
• Industrial equipment requiring stable low-voltage power rails
• Telecommunications infrastructure power management
• Embedded systems with strict power consumption constraints

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'IUFD' against official Analog Devices documentation to confirm temperature grade and package variant accuracy. Ensure compatibility with the required thermal dissipation capabilities of the 32-lead QFN package. Cross-reference the datasheet for any recent PCN updates regarding manufacturing site changes or material composition modifications prior to finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this component when designing systems requiring dual isolated or interleaved buck converters from a single input source. The wide input voltage range accommodates various bus architectures. Consider the 32-lead QFN package for compact board layouts while ensuring adequate thermal relief pads are designed into the PCB to handle the specified current loads effectively.

DC DC Switching Controllers Part Context

This part belongs to the LTC3858 family of synchronous step-down controllers. It shares functional similarities with other members like the LTC3858EUH but differs in package type and potentially temperature rating. The '1' suffix typically denotes specific pinout or feature variations within the series. It is distinct from single-phase controllers like the LTC3851 or digital power controllers like the LTC3883.

DC DC Switching Controllers FAQ

What is the maximum operating junction temperature for the LTC3858IUFD-1#PBF?

The maximum operating junction temperature is +125°C.

Does the LTC3858IUFD-1#PBF support clock synchronization?

No, the standard specifications for this controller indicate that clock synchronization is not supported.