LTC3835IUFD#TRPBF

DC DC Switching Controllers Overview

The LTC3835IUFD#TRPBF is a high-performance synchronous buck switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5V to 38V and supports output voltages from 600mV to 5.5V. The device utilizes a constant frequency current mode architecture with a switchable frequency up to 650kHz, which can be synchronized or phase-shifted. It features a typical no-load quiescent current of 80μA and drives all N-channel synchronous power MOSFETs. The component is housed in a 20-lead QFN (4x5mm) package and is rated for operation between -40°C and +125°C.

DC DC Switching Controllers Feature Summary

• Supports driving all N-channel synchronous power MOSFET stages for efficient step-down conversion
• Features a constant frequency current mode architecture with switchable frequencies up to 650kHz
• Enables synchronization to an external clock or phase shifting between multiple controllers
• Provides low no-load quiescent current to extend battery life in portable applications

DC DC Switching Controllers Applications

• Battery-powered systems requiring extended operational life
• Industrial equipment power distribution networks
• Distributed power architectures in telecommunications infrastructure
• Point-of-load regulation for digital signal processors and FPGAs

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IUFD designation corresponds to the industrial temperature grade (-40°C to +125°C). Ensure compatibility with N-channel MOSFET drivers. Check for RoHS compliance documentation. Validate that the 20-QFN footprint matches your PCB layout requirements before finalizing procurement.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring precise current mode control and low standby power consumption. It is suitable for applications needing flexible switching frequency adjustment up to 650kHz. Consider its capability for multi-phase operation if higher output currents are required. Ensure the input voltage range aligns with your system's supply rails. Verify that the thermal performance of the QFN package meets your heat dissipation needs.

DC DC Switching Controllers Part Context

This component belongs to the LTC3835 family of synchronous buck controllers from Analog Devices. It is designed for high-efficiency DC/DC conversion in space-constrained environments. The part integrates essential control logic while relying on external power stages. It serves as a core power management element in modern electronic systems demanding stable voltage regulation.

DC DC Switching Controllers Replacement Considerations

Direct replacements may include other Analog Devices synchronous buck controllers such as the LTC3838 series for dual-output applications. Cross-reference pinouts and control interfaces carefully. Verify that alternative parts support similar input voltage ranges and current capabilities. Ensure thermal and electrical specifications match the original design constraints.