LT1373HVIS8#PBF

Overview

The LT1373HVIS8#PBF is a high-voltage monolithic DC/DC switching regulator IC manufactured by Analog Devices Inc. It supports multiple converter topologies including Buck, Boost, Cuk, Flyback, Inverting, and SEPIC configurations. The device features an adjustable output voltage range from 1.245V to 42V with a maximum switch current of 1.5A. It operates with an input voltage range of 2.7V to 30V and switches at a frequency of 250kHz. The component is housed in an 8-SOIC (0.154 inch wide) surface-mount package and is rated for operation over a junction temperature range of -40°C to 125°C.

Feature Summary

• Supports versatile DC/DC conversion topologies including Buck, Boost, Cuk, Flyback, Inverting, and SEPIC within a single integrated circuit.
• Capable of generating positive or negative output voltages with adjustable regulation down to 1.245V.
• Designed for high-voltage applications with a maximum switch voltage rating of 42V.
• Integrates current-mode control architecture for stable operation across various load conditions.

Applications

• Industrial power supply systems requiring isolated or non-isolated voltage conversion
• Battery-powered equipment utilizing Cuk or SEPIC topologies for extended battery life
• Negative voltage generation for analog signal processing circuits
• Flyback converter designs in low-to-medium power consumer electronics

Procurement Notes

Verify the specific suffix 'VIS8' against official Analog Devices documentation to confirm pinout compatibility and thermal characteristics relative to other LT1373 variants. Ensure that the 8-SOIC package dimensions align with your PCB footprint requirements. Cross-reference the datasheet for any recent Product Change Notices (PCN) regarding material declarations or manufacturing site changes. Confirm RoHS compliance status through the manufacturer's official environmental declaration documents prior to final procurement approval.

Selection Notes

Select this component when application requirements demand a single IC solution for multiple topology options such as Buck-Boost or Cuk converters. The 1.5A switch current capability suits moderate power levels where external pass transistors are undesirable. Consider the 250kHz switching frequency for balancing efficiency and passive component size. Evaluate the 8-SOIC package for surface-mount assembly constraints and thermal dissipation needs compared to through-hole alternatives like PDIP.

Part Context

The LT1373 series represents Analog Devices' high-performance monolithic DC/DC regulators designed to simplify power supply design. The HVI variant specifically denotes high-voltage input and switch capabilities, distinguishing it from standard voltage versions. This part belongs to the broader LT137x family, which shares similar control architectures but varies in voltage ratings and package options. The LT1373HVIS8#PBF serves as a specialized surface-mount option for engineers needing robust high-voltage regulation in compact form factors.

Replacement Considerations

LT1373HVIN8#PBF is documented as a parameter-equivalent alternative offering identical electrical specifications in an 8-PDIP through-hole package. Verify package compatibility if transitioning between surface-mount and through-hole technologies. No other direct substitutes are confirmed in the provided source data.