LT1376IN8-5#PBF

Overview

The LT1376IN8-5#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates at a fixed 500 kHz switching frequency and delivers a regulated 5 V output with a maximum switch current of 1.5 A. The device accepts an input voltage range from 5 V to 25 V. It features a shutdown function and maintains a typical operating supply current of 2.5 mA. The component is housed in an 8-pin PDIP package designed for through-hole mounting, supporting junction temperatures between -40°C and +125°C.

Feature Summary

• Integrates a 1.5 A power switch with oscillator and control logic
• Enables significant reduction in external component size via high-frequency operation
• Includes a dedicated shutdown pin for power management

Applications

• Point-of-load regulation for digital circuits
• Battery-powered systems requiring efficient step-down conversion
• Industrial control power supplies

Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS status before procurement. Confirm the IN8 designation corresponds to the PDIP-8 through-hole package variant rather than surface-mount options. Cross-reference the manufacturer datasheet to ensure the fixed 5 V output version matches the design requirement, as other voltage variants exist within the LT1376 series.

Selection Notes

Select this part when a through-hole solution is required for board assembly processes that do not support surface-mount technology. The 500 kHz frequency allows for smaller passive components compared to lower-frequency regulators. Ensure the input voltage remains above 5 V to maintain proper regulation and consider thermal dissipation requirements given the single-layer DIP package construction.

Part Context

This component belongs to the LT1376 family of monolithic buck regulators. It shares core electrical specifications with the IS8 (SOIC) and CN8 (Commercial grade PDIP) variants, differing primarily in package type and temperature range. The IN8 suffix specifically denotes the industrial temperature grade PDIP package.

Replacement Considerations

LT1376CN8-5#PBF serves as a direct functional substitute with identical electrical characteristics but may differ in commercial versus industrial temperature rating verification.