LT1376IS8#PBF

Overview

The LT1376IS8#PBF is a monolithic buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 5 V to 25 V and delivers an adjustable output voltage up to 1.5 A. The device integrates a 1.5 A power switch, oscillator, and control logic within an 8-SOIC package. It functions at a fixed switching frequency of 500 kHz, enabling the use of compact external components. The unit supports shutdown functionality and maintains a low quiescent current of 20 uA. It is rated for operation between -40°C and +125°C.

Feature Summary

• Integrates a 1.5 A power switch and complete control circuitry in a single monolithic package
• High 500 kHz switching frequency reduces required external component size
• Supports adjustable output voltage configuration via external resistors
• Includes shutdown pin for power management and low standby current consumption

Applications

• Battery-powered portable equipment requiring efficient step-down conversion
• Industrial systems utilizing 5 V or 12 V bus architectures
• Post-regulation stages for higher voltage DC sources
• Embedded controller power supplies requiring compact footprints

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and temperature rating. Ensure the ordering part number matches the required SOIC-8 variant. Confirm RoHS compliance status through the manufacturer's latest material declaration. Cross-reference the datasheet revision to validate electrical characteristics before integration into design specifications.

Selection Notes

Select this component when a 1.5 A output current is required from a 5 V to 25 V input source. The 500 kHz frequency is suitable for applications prioritizing small passive component sizes over ultra-low noise. Consider the 8-SOIC package constraints for thermal management. Verify that the adjustable output range meets the target load requirements compared to fixed-voltage alternatives.

Part Context

This part belongs to the LT1376 family of high-frequency buck regulators. It shares core topology with variants like the LT1376CN8#PBF but differs in package style and industrial temperature grading. The IS8 designation indicates a surface-mount SOIC-8 form factor optimized for automated assembly. It complements lower-current options like the LT1676 series by providing higher output capability.

Replacement Considerations

LT1376IS#PBF serves as a direct pin-compatible alternative offering identical electrical performance in a larger SOIC-16 package.