LTC3838IUHF-1#PBF

DC DC Switching Controllers Overview

The LTC3838IUHF-1#PBF is a dual-channel, PolyPhase synchronous step-down DC/DC switching regulator controller manufactured by Analog Devices. It operates with an input voltage range of 4.5 V to 38 V and supports output voltages from 600 mV to 5.5 V. The device delivers up to 30 A output current across two channels with a fixed switching frequency of 2 MHz. It features a low static current of 15 uA and functions within a temperature range of -40°C to +125°C. Packaged in a QFN-38 surface-mount format, it utilizes controlled on-time valley current mode control for fast transient response.

DC DC Switching Controllers Feature Summary

• Dual independent channels drive all N-channel power MOSFETs for high-current applications
• Controlled on-time valley current mode architecture enables fast transient response without clock delay
• Maintains constant frequency switching under steady load conditions

DC DC Switching Controllers Applications

• High-performance server and workstation power distribution
• Industrial equipment requiring wide input voltage ranges
• Telecommunications infrastructure power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence before procurement. Confirm the QFN-38 package dimensions match your PCB footprint requirements. Ensure thermal management solutions are adequate for the operating temperature range of -40°C to +125°C. Cross-reference the manufacturer part number with official Analog Devices documentation to avoid counterfeit components.

DC DC Switching Controllers Selection Notes

Select this component when dual isolated or interleaved outputs are required from a single controller. The 2 MHz switching frequency allows for smaller external passive components compared to lower-frequency alternatives. Verify that the required output voltage falls within the 600 mV to 5.5 V range. Consider the 30 A total current capability against your specific load profile per channel.

DC DC Switching Controllers Part Context

This part belongs to the LTC3838-1 series of PolyPhase controllers designed for high-efficiency power conversion. It is distinct from single-channel variants like the LTC3832 and other multi-phase controllers such as the LTC3733. The device integrates advanced control loops optimized for digital and analog power management systems.

DC DC Switching Controllers Replacement Considerations

Consult official Analog Devices substitution guides for compatible alternatives. No direct public substitute part numbers are confirmed in the provided source material.