L7912CV

Overview

The L7912CV is a three-terminal negative voltage regulator from the L79xxC series, manufactured by STMicroelectronics. It provides a fixed output voltage of -12 V with an output current capability up to 1.5 A. The device operates within a DC input voltage range of -14.5 V to -35 V and features thermal overload protection, short-circuit protection, and output transition SOA protection. It utilizes a TO-220-3 through-hole package.

Feature Summary

• Provides local on-card regulation for negative voltage applications
• Includes internal thermal overload and short-circuit protection mechanisms
• Compatible with standard positive voltage options for split power supply designs

Applications

• Split power supplies requiring negative rail generation
• Local on-card voltage regulation
• Negative voltage distribution systems

Procurement Notes

Verify the specific order code against the manufacturer's official documentation to ensure correct package type and environmental compliance grade. Confirm that the application requirements align with the absolute maximum ratings defined in the datasheet, particularly regarding input voltage limits and thermal dissipation capabilities under load conditions.

Selection Notes

Select this component when a fixed -12 V negative rail is required with up to 1.5 A current capacity. Ensure adequate heat sinking is provided to support the maximum output current rating. Consider the TO-220 package form factor for through-hole mounting requirements and verify compatibility with existing circuit board layouts designed for the L78xx positive series.

Part Context

This part belongs to the L79xxC series of three-terminal negative regulators produced by STMicroelectronics. The series offers various fixed output voltages and is available in multiple packages including TO-220, TO-220FP, and D²PAK. It is designed to complement the L78xx positive regulator series for balanced power supply architectures.

Replacement Considerations

L7912ACV