L7905ACV-DG

Overview

The L7905ACV-DG is a fixed negative linear voltage regulator from STMicroelectronics, delivering a stable -5 V output with a maximum current capacity of 1.5 A. It 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. The device includes internal thermal overload and short-circuit protection, ensuring reliable operation across a junction temperature range of 0°C to +125°C. Packaged in a TO-220-3 through-hole housing, it exhibits a line regulation of 100 mV and load regulation of 100 mV.

Feature Summary

• Provides a fixed negative output voltage for power supply applications
• Integrates thermal overload and short-circuit protection mechanisms
• Utilizes a robust TO-220-3 package suitable for heatsinking

Applications

• Negative rail generation in dual-supply electronic systems
• Power management modules requiring stable negative bias
• General-purpose linear regulation circuits

Procurement Notes

Verify the specific suffix 'DG' against the manufacturer's official documentation to confirm compliance details and packaging specifications. Ensure the ordering information matches the exact part number variant required for your design, as suffixes may indicate differences in tape-and-reel configurations or environmental certifications distinct from standard tube packaging.

Selection Notes

Select this component when a fixed negative voltage is required with moderate current demands up to 1.5 A. Consider the thermal dissipation capabilities inherent to the TO-220 package for high-load scenarios. Verify that the input voltage remains within the specified -35 V maximum limit to prevent device damage while maintaining adequate headroom for regulation.

Part Context

This part belongs to the L79xx series of negative voltage regulators manufactured by STMicroelectronics. It serves as the negative counterpart to the L78xx positive regulator family, offering similar functionality for generating negative rails. The AC designation typically indicates tighter performance tolerances compared to standard variants within the same series.

Replacement Considerations

Compatible substitutes include the L7905CV and L7905ACV from STMicroelectronics, which share identical electrical characteristics and pinouts. Other manufacturers producing industry-standard L7905 devices may also serve as functional replacements provided pin compatibility and thermal ratings are verified.