LT1375IS8-5#TRPBF

Overview

The LT1375IS8-5#TRPBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc. It integrates a 1.5A switch, oscillator, control circuitry, and logic into an 8-SOIC package. The device operates at a fixed switching frequency of 500kHz to minimize external component size. It accepts an input voltage range from 5V to 25V and provides a fixed 5V output with a maximum current capability of 1.2A. The unit supports shutdown functionality and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates a high-current 1.5A power switch with complete oscillator and control logic on a single die
• Utilizes a fixed 500kHz switching frequency to significantly reduce the physical footprint of external passive components
• Includes dedicated shutdown pin for enhanced system power management and efficiency optimization

Applications

• Battery-powered portable equipment requiring efficient step-down conversion
• Post-regulation stages in distributed power supply architectures
• General-purpose DC-to-DC conversion in industrial control systems

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm that the -5 variant corresponds to the fixed 5V output specification rather than adjustable versions. Ensure compatibility with the 8-SOIC footprint during PCB layout review. Cross-reference the manufacturer datasheet for any recent product change notifications affecting marking or material composition.

Selection Notes

Select this component when a fixed 5V output is required from a 5V to 25V input source. The 500kHz frequency offers a balance between efficiency and component size compared to lower-frequency alternatives. Consider the 1.2A continuous output limit against peak load requirements. The integrated 1.5A switch provides headroom for transient loads without requiring external passives beyond standard design recommendations.

Part Context

This part belongs to the LT1375 family of monolithic step-down switching regulators. It shares architectural similarities with other members like the LT1376 but differs in output configuration. The IS8 designation specifies the industrial temperature grade and SOIC-8 package style. The #PBF suffix denotes lead-free compliance according to RoHS standards.

Replacement Considerations

LT1375IS8-5#PBF serves as the tube-packaged equivalent offering identical electrical performance.