L78M08ABDT-1

Overview

The L78M08ABDT-1 is a three-terminal positive linear voltage regulator from the L78MxxA series, manufactured by STMicroelectronics. It provides a fixed output voltage of 8 V with an output current capability up to 500 mA. The device operates within an extended temperature range of -40 °C to +125 °C and features ±2% output voltage tolerance. It is housed in a DPAK surface-mount package.

Feature Summary

• Integrated thermal overload protection that shuts down the circuit during excessive power conditions.
• Internal short-circuit protection limits maximum current flow to prevent damage.
• Output transistor safe-area protection reduces output short-circuit current as voltage across the pass transistor increases.

Applications

• Local on-card regulation for electronic circuits
• General-purpose power supplies requiring fixed voltage outputs
• Battery chargers

Procurement Notes

Verify the specific ordering suffix 'DT-1' against official STMicroelectronics documentation to confirm package type and environmental compliance grade. Ensure compatibility with existing PCB footprints designed for the DPAK form factor. Confirm availability status as product lifecycles may change.

Selection Notes

Select this component when a fixed 8 V output at 500 mA is required in a compact surface-mount design. The extended temperature range makes it suitable for industrial applications. Consider heat dissipation requirements due to the DPAK package's thermal resistance characteristics under load.

Part Context

This part belongs to the L78MxxA precision regulator family, which offers higher accuracy compared to standard L78Mxx variants. The series is designed for local regulation tasks, eliminating distribution problems associated with single-point regulation systems found in complex electronic assemblies.

Replacement Considerations

L78M08ABDT-TR