LT1376IS8-5#PBF

Overview

The LT1376IS8-5#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 provides a fixed 5 V output at up to 1.5 A. The device features a fixed 500 kHz switching frequency, enabling the use of small external components. It includes a shutdown feature and maintains a low quiescent current of 20 uA. Designed for industrial applications, it functions within a temperature range of -40°C to +125°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Integrates a 1.5 A power switch with oscillator and control logic on a single die
• Supports high-frequency operation to minimize external component size
• Includes a dedicated shutdown pin for power management

Applications

• Industrial point-of-load regulation
• Battery-powered systems requiring efficient step-down conversion
• General-purpose DC-DC conversion in embedded electronics

Procurement Notes

Verify the specific suffix IS8-5#PBF against official Analog Devices documentation to confirm the SOIC-8 package and 5V fixed output configuration. Ensure compatibility with required thermal dissipation standards for the operating environment. Cross-reference part markings with manufacturer datasheets to authenticate source integrity before integration into production designs.

Selection Notes

Select this component when a compact, non-synchronous buck solution is required for 5V output from higher input rails. The 500kHz frequency balances efficiency and component size. Consider the SOIC-8 package constraints for PCB layout. Verify that the 1.5A continuous current rating meets load requirements without exceeding thermal limits in the intended enclosure.

Part Context

This part belongs to the LT1376 series of monolithic buck regulators. It shares core architecture with variants like LT1376IN8-5#PBF but differs in packaging (SOIC-8 vs PDIP) and temperature grade specifications. The series is designed for cost-sensitive applications needing moderate current capability without the complexity of synchronous rectification.

Replacement Considerations

LT1376CN8-5#PBF is a documented direct substitute offering identical electrical performance in a PDIP-8 through-hole package.