LTC3838IUHF-2#PBF

DC DC Switching Controllers Overview

The LTC3838IUHF-2#PBF is a dual, PolyPhase synchronous step-down DC/DC switching regulator controller manufactured by Analog Devices Inc. It features two independent channels that drive all N-channel power MOSFETs. The device supports an input voltage range of 4.5V to 38V and delivers up to 30A output current per channel with adjustable output voltages from 600mV to 5.5V. Operating at a switch frequency up to 2MHz, it maintains a typical quiescent current of 15µA. The component is housed in a 38-lead QFN package and operates within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Dual independent channels for high-current PolyPhase operation
• Integrated differential remote sensing for precise load regulation
• Supports wide input voltage range suitable for industrial applications

DC DC Switching Controllers Applications

• Industrial distributed power systems
• Telecommunications infrastructure
• Point-of-load regulation for FPGA or ASIC cores

DC DC Switching Controllers Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free RoHS compliance when ordering. Confirm the '-2' variant designation matches the required pinout or feature set compared to other family members like the '-1'. Ensure the 38-QFN package dimensions align with the PCB footprint design. Cross-reference the manufacturer's latest datasheet revision for any updates to electrical characteristics or recommended operating conditions prior to final procurement.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring high efficiency and tight voltage regulation under heavy loads. The dual-channel architecture allows for interleaved operation to reduce input and output ripple currents. Consider the thermal performance of the QFN package and ensure adequate copper area for heat dissipation. Verify that the external MOSFETs selected can handle the peak currents generated by the 2MHz switching frequency and 30A capability.

DC DC Switching Controllers Part Context

This component belongs to the LTC3838 series of PolyPhase controllers, designed for demanding power management tasks. It complements single-channel regulators by providing higher current density through phase-interleaving. The series is characterized by fast transient response and high accuracy, making it suitable for complex digital loads that require stable power delivery across varying line and load conditions.

DC DC Switching Controllers Replacement Considerations

The LTC3838IUHF-1#PBF is a related variant within the same family. Verify if the functional differences between the '-1' and '-2' suffixes impact the specific application requirements before substitution.