LD1585CV33

Overview

The LD1585CV33 is a positive fixed linear voltage regulator from STMicroelectronics, providing a stable 3.3V output with a maximum current capacity of 5A. It belongs to the LD1585C series, characterized by low dropout voltage performance, guaranteed at a maximum of 1.4V under full load conditions. The device features fast transient response capabilities and includes internal protection mechanisms such as thermal shutdown and safe area protection. Designed for through-hole mounting in TO-220AB packages, it ensures reliable operation within specified input voltage ranges up to 30V.

Feature Summary

• Provides fixed 3.3V output with high current capability up to 5A
• Low dropout voltage design ensures efficient regulation under varying load conditions
• Fast transient response maintains stability during rapid load changes
• Integrated thermal shutdown and safe area protection prevent damage under fault conditions

Applications

• Power supply systems requiring stable 3.3V logic levels
• Embedded systems with high current demand components
• Industrial equipment needing reliable linear regulation
• Consumer electronics utilizing TO-220 packaged regulators

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches TO-220AB specifications. Check RoHS compliance status if required for specific regulatory environments. Ensure storage conditions meet semiconductor handling standards to maintain performance integrity.

Selection Notes

Consider input voltage range compatibility with system power sources. Evaluate thermal management requirements due to potential heat dissipation at high currents. Compare dropout characteristics against minimum input-output voltage differentials in the application. Assess package suitability for available PCB mounting space and thermal constraints.

Part Context

Part of STMicroelectronics' LD1585C family of low dropout regulators designed for applications requiring robust current handling and stable voltage regulation. The CV33 suffix indicates the fixed 3.3V output variant within this series, offering consistent performance across various industrial and commercial electronic designs.

Replacement Considerations

Check for equivalent LDO regulators with similar 5A current ratings and 3.3V fixed output. Verify pinout compatibility for direct replacement in existing TO-220AB footprints. Confirm thermal performance metrics match original specifications to avoid overheating issues.