L78LR05D-FA-E

Overview

The L78LR05D-FA-E is a linear voltage regulator from onsemi, providing a fixed positive 5V output with a maximum current of 150 mA. It operates within an input voltage range up to 20V and features a typical dropout voltage of 2.2V at 40mA. The device is housed in a TO-252-5 (DPAK) surface-mount package. Line regulation is specified at 75 mV, and load regulation at 60 mV. The component supports through-hole or surface-mount installation styles depending on the specific variant configuration, with an operating temperature range extending from -30°C to +80°C.

Feature Summary

• Provides a stable fixed positive 5V DC output for power supply applications
• Capable of delivering up to 150 mA continuous output current
• Designed for low dropout operation to maintain regulation under varying input conditions
• Integrated thermal protection to safeguard against overheating during operation

Applications

• General purpose linear power supply circuits requiring 5V logic levels
• Battery-powered devices needing efficient voltage step-down
• Embedded systems and microcontroller power rails
• Industrial control modules requiring stable voltage regulation

Procurement Notes

Verify component authenticity and datasheet revisions before integration. Confirm package compatibility and pinout alignment with PCB footprint designs. Check for end-of-life status or obsolescence notices from onsemi. Ensure storage conditions meet moisture sensitivity level requirements if applicable. Validate that the specific batch meets all electrical specifications outlined in the official documentation.

Selection Notes

Select this component when a fixed 5V output is required with moderate current demands up to 150 mA. Consider the TO-252-5 package for surface-mount assembly needs. Evaluate thermal management requirements based on input-output voltage differentials and ambient temperatures. Compare line and load regulation specs against system tolerance requirements. Ensure the operating temperature range covers the intended environmental conditions.

Part Context

This part belongs to onsemi's L78LR series of linear regulators, designed for general-purpose voltage regulation tasks. The series offers various output voltages and current capabilities, catering to diverse electronic design needs. The L78LR05D-FA-E specifically targets applications requiring a reliable 5V supply in a compact surface-mount form factor, balancing performance and size constraints.

Replacement Considerations

Check for direct substitutes like L78LR05D-MA-E or similar 5V 150mA regulators from other manufacturers. Verify pinout compatibility and package dimensions to ensure seamless replacement. Review updated datasheets for any changes in electrical characteristics or thermal performance. Confirm availability and lead times for alternative components if the original part is discontinued.

FAQ

What is the maximum input voltage for the L78LR05D-FA-E?

The maximum input voltage is 20V.

Does the L78LR05D-FA-E include thermal protection?

Yes, it includes integrated thermal shutdown protection to prevent damage from overheating.

What is the typical dropout voltage at 40mA?

The typical dropout voltage is 2.2V at 40mA.