LTC3838EUHF#PBF

DC DC Switching Controllers Overview

The LTC3838EUHF#PBF is a dual-channel, PolyPhase synchronous step-down DC/DC switching regulator controller manufactured by Analog Devices Inc. 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 independent channels that drive all N-channel power MOSFETs. It utilizes a controlled on-time, valley current mode control architecture for fast transient response without clock delay. The unit features a 2 MHz switch frequency, 15 uA static current, and operates within a temperature range of -40°C to +125°C in a 38-pin QFN package.

DC DC Switching Controllers Feature Summary

• Dual-channel PolyPhase architecture with independent control for driving all N-channel power MOSFETs
• Controlled on-time, valley current mode control enabling fast transient response without clock delay
• Supports RSENSE or inductor DCR current detection methods
• Integrated differential remote output sensing capability

DC DC Switching Controllers Applications

• High-performance server and workstation power distribution networks
• Telecommunications infrastructure equipment requiring multi-phase buck conversion
• Industrial systems demanding wide input voltage ranges and high current density
• Networking hardware utilizing low-voltage, high-current ASIC power supplies

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates tube packaging when ordering. Confirm the EUHF variant matches the required industrial temperature range and pinout compatibility for your PCB layout. Cross-reference the datasheet revision to ensure feature alignment with your design requirements before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this component for designs requiring dual independent outputs or combined multi-phase operation for high current loads. The wide input voltage range suits applications with varying supply rails. Ensure external components support the 2 MHz switching frequency and verify thermal management strategies for the QFN-38 package under maximum load conditions.

DC DC Switching Controllers Part Context

This part belongs to the LTC3838 family of PolyPhase controllers designed for high-efficiency power delivery. It complements other Analog Devices PMIC solutions by offering precise current sharing and rapid dynamic response. The device integrates advanced protection features including overvoltage protection and current limit foldback for robust system reliability.

DC DC Switching Controllers Replacement Considerations

LTC3838IUHF-1#PBF serves as a verified industrial-grade substitute within the same series. Both parts share identical functional specifications and pinouts. Verify temperature ratings and packaging differences when substituting to ensure mechanical and environmental compliance.