L7915ACV

Overview

The L7915ACV is a three-terminal negative voltage regulator from the L79xxAC series by STMicroelectronics. It provides a fixed output voltage of -15 V with an output current capability up to 1.5 A when adequate heat sinking is provided. The device features thermal overload protection, short-circuit protection, and output transition SOA protection. It operates within a junction temperature range of 0 to 125 °C and accepts a maximum DC input voltage of -35 V for this output level. The component is housed in a TO-220 package.

Feature Summary

• Integrated thermal overload protection prevents damage during overheating conditions.
• Built-in short-circuit protection safeguards the device against output faults.
• Output transition Safe Operating Area (SOA) protection ensures stability during dynamic load changes.

Applications

• Local on-card regulation
• Split power supplies
• Adjustable voltage and current circuits using external components

Procurement Notes

Verify that the specific part number matches the required package type and output voltage tolerance. Confirm compliance with environmental standards such as ECOPACK if lead-free requirements are necessary. Ensure the supplier provides documentation confirming the device grade and revision history consistent with the manufacturer's datasheet specifications.

Selection Notes

Select this component for applications requiring a stable negative voltage rail. Consider the thermal resistance values when designing the heat dissipation strategy, as the device can deliver over 1.5 A with sufficient cooling. Verify that the input voltage range accommodates the dropout voltage requirements for the intended load current.

Part Context

This device belongs to the L79xxAC series of 2% negative voltage regulators. It shares the same voltage options as the L78xxA positive standard series, making it suitable for complementary split power supply designs. The series is available in TO-220 and D2PAK packages.

Replacement Considerations

L7915AC