L78M15CV

Overview

The L78M15CV is a three-terminal positive linear voltage regulator from the STMicroelectronics L78M series. It provides a fixed 15 V output with a maximum continuous current of 500 mA. The device supports an input voltage range up to 35 V and operates within a junction temperature range of 0 °C to +150 °C. Key electrical specifications include a typical line regulation of 100 mV, load regulation of 100 mV, and a quiescent current of 6 mA. It features internal thermal overload protection and short-circuit current limiting.

Feature Summary

• Integrated thermal overload protection prevents damage during overheating conditions.
• Internal short-circuit current limiting safeguards the device against output faults.
• Requires no external components for basic fixed-voltage regulation operation.

Applications

• Local or on-card voltage regulation
• Noise elimination in power distribution systems
• Replacement for Zener diode and resistor combinations

Procurement Notes

Verify the specific suffix 'CV' corresponds to the TO-220-3 through-hole package and tube packaging format. Confirm that the component meets RoHS directives if required by the target assembly process. Ensure the supplier documentation explicitly references the L78M series characteristics rather than the standard L78 or L78L series.

Selection Notes

Select this component when a fixed 15 V output at up to 500 mA is required in a through-hole configuration. The L78M series offers higher current capability than the L78L series but lower thermal performance than the L78 series. Verify that the input voltage remains within the 35 V maximum limit and that adequate heat dissipation is provided for the expected load current.

Part Context

The L78M15CV belongs to the L78Mxx family of three-terminal positive regulators. This family is designed for general-purpose linear regulation applications requiring moderate current levels. The part integrates internal protection circuits to ensure reliability in various industrial and commercial environments without requiring external feedback networks.

Replacement Considerations

Compatible substitutes include other manufacturers' L78M15 variants. Cross-reference pinouts and thermal resistance values to ensure mechanical and electrical compatibility. Verify that alternative parts meet the same 500 mA output current and 35 V input voltage specifications.