LT1375IS8#PBF

Overview

The LT1375IS8#PBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc. It operates at a fixed switching frequency of 500kHz and integrates a 1.5A power switch, oscillator, control circuitry, and logic on a single die. The device supports an input voltage range from 5V to 25V and provides a positive adjustable output voltage starting from 2.42V up to 21.5V. It delivers a maximum output current of 1.5A through its internal switch. The component functions as a step-down DC-DC converter with shutdown capability and is housed in an 8-SOIC surface-mount package.

Feature Summary

• Integrates a high-current 1.5A power switch within the monolithic die structure
• Operates at a fixed 500kHz switching frequency to minimize external component size
• Supports wide input voltage ranges suitable for various power supply architectures
• Includes built-in oscillator, control logic, and shutdown functionality

Applications

• General-purpose step-down DC-DC conversion circuits
• Battery-powered systems requiring efficient voltage regulation
• Industrial control systems utilizing standard logic levels
• Embedded applications needing compact power management solutions

Procurement Notes

Verify the specific suffix designation against official Analog Devices documentation to confirm pinout compatibility and electrical characteristics. Ensure the procurement channel sources genuine components with valid traceability records. Cross-reference the manufacturer part number with the latest datasheet revisions to account for any potential manufacturing changes or packaging updates that may affect integration.

Selection Notes

Select this component when a fixed-frequency buck topology is required with integrated high-current switching capabilities. It is suitable for designs prioritizing reduced external passive component count due to the 500kHz operation. Consider the thermal performance within the SOIC-8 package relative to the expected load current and ambient temperature conditions during system design.

Part Context

This part belongs to the LT1375 series of switching regulators, which are designed for high-efficiency power conversion. The series typically includes variants with different output configurations and packages. The IS8 designation indicates the specific plastic small outline package variant used for surface-mount assembly, distinguishing it from other form factors within the same functional family.

Replacement Considerations

LT1375IS8#PBF serves as the primary identifier. Verify if LT1375IS8 without the PBF suffix is functionally equivalent regarding lead-free compliance requirements. Check for newer generation replacements within the Analog Devices portfolio that may offer improved efficiency or thermal performance while maintaining pin compatibility.