LD2980ABM50TR

Overview

The LD2980ABM50TR is a fixed positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a nominal output voltage of 5.0V with a maximum continuous output current capability of 50mA. The device utilizes a SOT-23-5 surface-mount package, measuring approximately 2.9mm in length and 1.75mm in width. It operates within an input voltage range from 2.5V to a maximum of 16V. The unit supports an extended operating temperature range spanning from -40°C to +125°C.

Feature Summary

• Ultra-low dropout voltage performance ensures efficient regulation even with minimal input-to-output differential.
• Very low quiescent current consumption minimizes power drain in battery-powered applications.
• Integrated electronic shutdown function allows for logic-controlled standby modes to reduce system power usage.
• Designed for stability with low equivalent series resistance ceramic output capacitors.

Applications

• Battery-powered portable instrumentation systems
• Industrial control boards requiring local regulation
• Audio systems needing low noise power supplies
• Switched-mode power supply post-regulation stages

Procurement Notes

Verify the specific suffix 'ABM' against the manufacturer's official datasheet to confirm the exact output voltage tolerance and package variant. Ensure the ordering quantity aligns with the standard factory reel size to avoid additional handling fees or cut-tape premiums. Confirm RoHS compliance status matches your assembly requirements before finalizing the purchase order.

Selection Notes

Select this component when a stable 5V rail is required with moderate current demands up to 50mA. It is suitable for designs prioritizing low static current and compatibility with small ceramic capacitors. Consider alternative packages if higher thermal dissipation or larger current capacity is needed beyond the SOT-23-5 limitations.

Part Context

This part belongs to the LD2980 family of ultra-low drop voltage regulators designed for low-noise and low-power applications. The family features internal current and thermal limiting protections. While similar to the LD2981 series, the LD2980 typically offers lower quiescent current and is optimized for operation with low ESR ceramic capacitors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications carefully when considering cross-brand alternatives such as the LP2980 series.