L7915ACV-DG

Overview

The L7915ACV-DG is a fixed negative linear voltage regulator from the STMicroelectronics L79xx series. It provides a stable -5 V output with a maximum continuous current of 1.5 A. The device operates within an input voltage range of -7 V to -35 V and features a typical dropout voltage of 1.4 V at 1 A load. Internal protections include thermal overload shutdown and safe area compensation for short-circuit conditions. It is housed in a TO-220-3 through-hole package, suitable for industrial applications operating between 0°C and +125°C.

Feature Summary

• Fixed negative voltage regulation with integrated thermal and short-circuit protection
• High current capability supporting up to 1.5 A continuous output
• Robust construction designed for wide input voltage ranges

Applications

• Industrial power supply systems requiring negative rails
• Embedded electronics utilizing dual polarity power architectures
• General-purpose circuit biasing and reference generation

Procurement Notes

Verify the specific suffix designation against official manufacturer documentation to confirm exact electrical tolerances and package variations. Ensure compatibility with existing thermal management designs due to the TO-220 form factor. Cross-reference ordering codes with authorized distributors to avoid obsolete or non-compliant variants during acquisition.

Selection Notes

Select this component when a reliable -5 V negative rail is required for analog or digital circuits. Consider the thermal dissipation requirements associated with the voltage drop across the regulator. Evaluate the need for external capacitors to ensure stability under varying load conditions and input impedance characteristics.

Part Context

This part belongs to the L79xx family of three-terminal negative regulators, serving as the counterpart to the positive L78xx series. It is widely utilized in standard power supply topologies where precise negative voltage generation is necessary without complex feedback networks.

Replacement Considerations

MC79M05BTG by onsemi offers similar functionality in a comparable package.