L78S10CV

Overview

The L78S10CV is a fixed positive linear voltage regulator from the STMicroelectronics L78S series, designed for general-purpose regulation applications. It provides a fixed output voltage of 10 V with a maximum output current capability of 2 A. The device accepts an input voltage range up to a maximum of 35 V and supports a minimum operating temperature of -40 °C and a maximum operating temperature of +150 °C. It utilizes a D2PAK surface-mount package and incorporates internal protection mechanisms including thermal overload shutdown and short-circuit limiting.

Feature Summary

• Provides stable fixed voltage regulation without requiring external components
• Incorporates internal thermal overload protection and short-circuit limiting for robust operation
• Designed for high-current applications with a 2 A output capability

Applications

• Local or on-card voltage regulation in electronic circuits
• Power supply sections for equipment requiring a stable 10 V rail
• Replacement for Zener diode and resistor combinations in biasing networks

Procurement Notes

Verify the specific suffix 'S' indicates the D2PAK surface-mount package variant distinct from through-hole versions. Confirm the manufacturer is STMicroelectronics as part numbers may be replicated by other vendors. Ensure the component meets the required thermal dissipation specifications for the intended application environment before finalizing procurement.

Selection Notes

Select this component when a 2 A current capacity is required alongside a fixed 10 V output. The D2PAK package offers improved thermal performance compared to standard TO-220 packages for surface-mount designs. Consider the input-to-output voltage differential to ensure adequate heat sinking is provided to maintain operation within the specified junction temperature limits.

Part Context

This component belongs to the L78S series of three-terminal positive regulators manufactured by STMicroelectronics. The series is engineered to deliver higher output currents than the standard L7800 family while maintaining similar ease of use. It serves as a reliable solution for power management tasks where fixed voltage regulation and moderate current handling are primary requirements.

Replacement Considerations

Compatible substitutes include the L78S10ACV and L78S10CT from STMicroelectronics, which share identical electrical characteristics but differ in package type or tolerance. Cross-brand equivalents such as the MC78S10CDT from ON Semiconductor are functionally interchangeable provided pinouts and thermal ratings align.