LT1374CS8#TRPBF

Overview

The LT1374CS8#TRPBF is a high-efficiency, constant-frequency step-down switching regulator manufactured by Analog Devices Inc. It operates with a fixed 500kHz switching frequency and supports an input voltage range of 5.5V to 25V. The device provides an adjustable output voltage up to 3.6A load current capability. Packaged in a compact 8-lead SOIC (SO-8) surface-mount format, it integrates internal power switches rated for 4.5A peak current. The component functions as a monolithic DC-to-DC converter designed for efficient power management in space-constrained applications.

Feature Summary

• Integrates high-current internal power switches capable of handling significant load demands without external pass transistors.
• Utilizes a fixed 500kHz constant-frequency architecture to minimize passive component size while maintaining stable regulation.
• Features a compact 8-lead SOIC package design optimized for surface-mount assembly in dense circuit layouts.

Applications

• Local on-board voltage regulation in personal computer systems
• Power supply stages for disk drive mechanisms
• Voltage conversion for portable hand-held electronic devices

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the CS8 designation corresponds to the commercial temperature grade operating range. Ensure compatibility with standard SO-8 footprints during PCB layout verification. Cross-reference datasheet revisions to confirm pinout consistency for existing designs.

Selection Notes

Select this component for applications requiring high output current from a moderate input voltage range. The fixed 500kHz frequency allows for smaller inductors compared to lower-frequency alternatives. Consider the thermal performance of the SO-8 package under maximum load conditions. Verify that the adjustable output voltage range meets the specific system requirements.

Part Context

This part belongs to the LT1374 family of high-efficiency buck converters. It shares architectural similarities with other members like the LT1374HV but differs in input voltage specifications and package options. The series is characterized by its ability to deliver substantial current in small form factors, targeting portable and embedded power solutions.

Replacement Considerations

LT1374HVIS8#PBF is documented as a parameter-equivalent substitute option.