LTC3838IUHF-1#TRPBF

DC DC Switching Controllers Overview

The LTC3838IUHF-1#TRPBF 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 utilizes a controlled on-time, valley current mode control architecture to ensure fast transient response without clock delay while maintaining constant frequency switching under steady load conditions. It features a 2 MHz switching frequency, 15 uA quiescent current, and drives all N-channel power MOSFETs via two independent channels. The component is housed in a QFN-38 package and operates within a temperature range of -40°C to +125°C.

DC DC Switching Controllers Feature Summary

• Dual-channel PolyPhase synchronous buck controller architecture
• Controlled on-time valley current mode for fast transient response
• Independent channel drive for all N-channel power MOSFETs
• Constant frequency switching capability at steady load

DC DC Switching Controllers Applications

• High-performance computing systems requiring multi-phase power delivery
• Telecommunications infrastructure power management
• Industrial equipment needing wide input voltage regulation
• Server and networking hardware core voltage generation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the I grade designation matches your required operating temperature range of -40°C to +125°C. Ensure compatibility with your PCB footprint for the QFN-38 package. Check for any recent product change notifications regarding pinout or electrical specifications before finalizing design integration.

DC DC Switching Controllers Selection Notes

Select this component when high current density and rapid transient response are critical. The dual-channel design allows for efficient parallel operation or independent dual-output configurations. Consider the 2 MHz switching frequency for reduced passive component size compared to lower frequency alternatives. Verify that the external MOSFETs selected can handle the peak currents generated by the valley current mode control scheme.

DC DC Switching Controllers Part Context

This part belongs to the LTC3838-1 series of PolyPhase controllers. It is designed for applications demanding high efficiency and compact power solutions. The series is characterized by its ability to synchronize multiple phases for increased current capacity while maintaining tight voltage regulation. It serves as a key component in modern power management integrated circuits for complex digital loads.

DC DC Switching Controllers Replacement Considerations

Direct substitutes may include other dual-channel PolyPhase controllers from Analog Devices such as the LTC3838EUHF-1, though input voltage ranges and switching frequencies may differ. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.