LF80ABDT

Overview

The LF80ABDT is a fixed-output positive Low Dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a stable 8.0V output with a maximum continuous current capability of 0.5A. The device features a low dropout voltage, with a typical value of 0.4V and a maximum of 0.7V at full load. It operates within an input voltage range of 9V to 16V, with an absolute maximum rating of 40V. Key electrical specifications include a line regulation of 0.04% and a load regulation of 0.04%. The component is housed in a TO-252 package.

Feature Summary

• Fixed 8.0V output voltage for precise power supply applications
• Low dropout operation ensuring efficiency under varying input conditions
• High stability with minimal line and load regulation deviations
• Robust design supporting automotive-grade reliability standards

Applications

• Automotive electronic systems requiring stable 8V logic supplies
• General-purpose linear power regulation circuits
• Embedded systems needing low-noise voltage references

Procurement Notes

Verify the specific ordering code against the manufacturer's official documentation to ensure correct package and temperature grade. Confirm RoHS compliance status as indicated in the datasheet. Check for any suffix variations that may denote different packaging or testing levels. Ensure the supplier provides valid traceability documents. Cross-reference the part number with the latest STMicroelectronics product selector guide to avoid obsolete stock.

Selection Notes

Select this component when a fixed 8.0V output is required with moderate current demands up to 0.5A. It is suitable for applications where input voltages are consistently above 9V. Consider the thermal performance in the TO-252 package for your specific power dissipation requirements. Compare its low dropout characteristics against other LDOs if input voltage margins are tight. Ensure the 40V absolute maximum input rating aligns with your system's transient voltage limits.

Part Context

This LDO regulator belongs to STMicroelectronics' portfolio of linear voltage regulators designed for robust performance in demanding environments. The TO-252 package offers a balance between thermal dissipation and board space efficiency. As a fixed-output device, it simplifies circuit design by eliminating external feedback resistors. The component is engineered to meet stringent automotive quality standards, ensuring long-term reliability in vehicle electronics.

Replacement Considerations

Consult the official STMicroelectronics replacement matrix for verified cross-references. Ensure any substitute matches the 8.0V output, 0.5A current rating, and TO-252 package. Verify pin compatibility and thermal characteristics before integration.