L7905ACD2T-TR

Overview

The L7905ACD2T-TR is a three-terminal negative linear voltage regulator from the L79xxAC series, manufactured by STMicroelectronics. It provides a fixed output voltage of -5 V with an output current capability up to 1.5 A. The device is housed in a D2PAK (TO-263) surface-mount package and operates within a junction temperature range of 0 °C to 125 °C. It features thermal overload protection, short-circuit protection, and safe operating area (SOA) protection.

Feature Summary

• Provides local on-card regulation for split power supplies
• Includes thermal overload and short-circuit protection
• Capable of delivering over 1.5 A output current with adequate heat sinking

Applications

• Split power supply systems
• Local on-card regulation
• Negative voltage generation circuits

Procurement Notes

Verify the specific ordering code matches the required package type and output voltage tolerance. Confirm that the D2PAK footprint aligns with the manufacturer's recommended layout data. Ensure the application design accounts for thermal resistance values to maintain junction temperatures within the specified operational limits under maximum load conditions.

Selection Notes

Select this component when a fixed negative voltage rail is required for analog or digital circuitry. The D2PAK package is suitable for surface-mount assembly where moderate power dissipation is expected. Consider external components for transient response improvement if large output capacitors are utilized in the design.

Part Context

This part belongs to the L79xxAC series of negative regulators, which complements the L78xxA positive series. The AC suffix indicates a specific performance grade within the family. The D2PAK variant offers a surface-mount alternative to the through-hole TO-220 package, facilitating automated PCB assembly processes.

Replacement Considerations

L7905CD2T-TR