LT1374CS8-5#TRPBF

Overview

The LT1374CS8-5#TRPBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with a fixed 500 kHz switching frequency and accepts an input voltage range of 5 V to 25 V. The device provides a fixed 5 V output with a maximum switch current of 4.5 A. It features a low quiescent current of 20 uA and supports shutdown functionality. The component is housed in an 8-SOIC package and is rated for operation between 0°C and +125°C.

Feature Summary

• Fixed 5 V output configuration eliminates external feedback resistor requirements
• High-efficiency constant-frequency buck topology enables compact passive designs
• Integrated shutdown pin allows for precise power management control

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF confirms tape-and-reel packaging rather than tube format. Confirm the -5 variant designation matches the required fixed 5 V output specification. Ensure the SOIC-8 package width aligns with the target PCB footprint constraints. Cross-reference the manufacturer part number against official Analog Devices documentation to validate authenticity.

Selection Notes

Select this component when a fixed 5 V rail is required from a 5 V to 25 V input source. The 4.5 A switch current capability supports moderate load demands without external passives. The 500 kHz frequency balances efficiency with component size. Verify that the thermal performance of the SOIC-8 package meets the application's heat dissipation requirements under full load conditions.

Part Context

This part belongs to the LT1374 series of high-efficiency step-down regulators. The series includes adjustable variants and different package options such as TO-220-7. The LT1374 family is designed for applications requiring robust performance and high efficiency in space-constrained environments.

Replacement Considerations

LT1374CS8#PBF serves as a parameter-equivalent alternative, differing primarily in tube packaging instead of tape-and-reel.