L7905CV-DG

Overview

The L7905CV-DG is a three-terminal negative voltage regulator from the L79xxC series, manufactured by STMicroelectronics. It provides a fixed output voltage of -5 V with an output current capability up to 1.5 A. The device features thermal overload protection, short circuit protection, and output transition SOA protection. It operates within a junction temperature range of 0 to 150 °C and utilizes a TO-220 package with a dual gauge frame.

Feature Summary

• Integrated thermal overload protection safeguards against excessive heat generation during operation.
• Built-in short circuit protection limits current flow to prevent damage under fault conditions.
• Output transition safe operating area (SOA) protection ensures stability during dynamic load changes.

Applications

• Local on-card regulation for electronic circuits
• Split power supply systems requiring negative voltage rails
• General-purpose linear voltage regulation

Procurement Notes

Verify that the component matches the specific L7905CV-DG order code and TO-220 dual gauge frame package configuration. Confirm compliance with RoHS standards and ensure the supplier provides valid traceability documentation for this production data part number.

Selection Notes

Select this regulator when a fixed -5 V negative rail is required with up to 1.5 A current capacity. Ensure adequate heat sinking is provided to maintain performance above 1.5 A. Verify input voltage stays within the -35 V maximum rating for the -5 V output variant.

Part Context

This component belongs to the L79xxC series of negative voltage regulators. It shares functional similarities with other members like L7908, L7912, and L7915, differing primarily in fixed output voltage. It complements the L78xx positive regulator series for symmetric power supply designs.

Replacement Considerations

L7905C, L7905CV, L7905CP are electrically compatible variants within the same series offering identical -5 V regulation but may differ in package type or manufacturing origin.