L78S12CV

Overview

The L78S12CV is a positive voltage regulator from the STMicroelectronics L78 series, delivering a fixed 12 V output with a maximum load current of 2.0 A. It operates within an input voltage range of 14 V to 35 V DC and features internal thermal overload and short-circuit protection. The device utilizes a TO-220-3 through-hole package, supporting a maximum junction temperature of 150 °C and an operating ambient range of 0 °C to +125 °C.

Feature Summary

• Fixed 12 V output regulation for stable power supply applications
• Integrated thermal overload and short-circuit protection mechanisms
• High current capability up to 2.0 A in a robust TO-220-3 package

Applications

• General-purpose linear power supplies requiring 12 V output
• Embedded systems power conditioning
• Industrial control equipment voltage regulation

Procurement Notes

Verify the specific suffix 'CV' against the official STMicroelectronics datasheet to confirm the 2.0 A rating and TO-220-3 package variant. Ensure compatibility with required input voltage ranges and thermal management solutions for high-current operation.

Selection Notes

Select this component when a fixed 12 V output at up to 2.0 A is required with built-in protection features. Consider the TO-220-3 package for through-hole mounting and adequate heat dissipation capabilities in space-constrained designs.

Part Context

Part of the L78 series of three-terminal positive linear regulators. This family provides fixed output voltages with internal current limiting and thermal shutdown, widely used in standard power supply designs across various industrial and consumer electronics applications.

Replacement Considerations

L7812CV (1.5 A version); LM7812 (generic equivalent). Verify pinout and thermal performance differences before substitution.