LTC3853IUJ#PBF

DC DC Switching Controllers Overview

The LTC3853IUJ#PBF is a triple-output synchronous step-down DC/DC controller manufactured by Analog Devices Inc. It operates within an input voltage range of 4.5V to 24V and supports switching frequencies between 250kHz and 750kHz. The device features three positive output channels housed in a 40-WFQFN (6x6mm) package with an exposed pad. It includes integrated current limit, enable, frequency control, power good, soft start, and tracking functions. The component is rated for operation at junction temperatures from -40°C to 150°C.

DC DC Switching Controllers Feature Summary

• Integrates on-chip drivers for synchronous buck topology
• Supports independent or multiphase channel configurations
• Includes comprehensive protection and control features

DC DC Switching Controllers Applications

• High-density point-of-load regulation
• Industrial distributed power systems
• Telecommunications infrastructure

DC DC Switching Controllers Procurement Notes

Verify the specific suffix against official documentation to confirm pinout and electrical characteristics match design requirements. Confirm RoHS compliance status through manufacturer datasheets. Ensure ESD handling protocols are followed during assembly due to the fine-pitch QFN package geometry.

DC DC Switching Controllers Selection Notes

Select this controller when multiple isolated or non-isolated low-voltage rails are required from a single intermediate bus. Evaluate thermal performance based on the exposed pad soldering requirements. Consider the maximum operating temperature rating for high-ambient environments.

DC DC Switching Controllers Part Context

This component belongs to the LTC3853 family of multiphase synchronous step-down controllers. It is designed to drive external N-channel MOSFETs. The part number indicates a specific industrial temperature grade and tape-and-reel packaging configuration distinct from tube-packaged variants.

DC DC Switching Controllers Replacement Considerations

Consult official cross-reference lists for verified substitutes. Verify compatibility of control interfaces and driver strengths before substitution.