L4931CD27-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The L4931CD27-TR is a fixed positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 2.7V output with a maximum current capacity of 250mA. The device operates within an input voltage range of 4V to 20V and features a typical dropout voltage of 0.4V. It includes internal current limiting and thermal shutdown protection. The component is housed in an 8-SOIC surface-mount package and supports operation across a temperature range of -40°C to +125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Very low dropout voltage enables efficient regulation in battery-powered systems
• Logic-controlled electronic shutdown function reduces total power consumption
• Internal current and thermal limit protections ensure operational safety

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered portable electronics
• Low noise power supply circuits
• Local voltage regulation for microprocessor systems

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'CD27' confirms the 2.7V fixed output voltage, as the L4931 series offers multiple voltage options. Ensure the 'TR' designation matches the required reel packaging format for your assembly line. Confirm the SOIC-8 package type aligns with your PCB footprint requirements before finalizing procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a fixed 2.7V rail is required with moderate current demands up to 250mA. The low quiescent current makes it suitable for energy-efficient designs. Consider the SOIC-8 package for surface-mount applications requiring compact board space. Verify that the input voltage remains within the specified 4V to 20V range for proper regulation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the L4931 family of very low drop voltage regulators with inhibit functions. The family is designed for low noise and low power applications, particularly in battery-operated systems. Other variants in the series offer different fixed output voltages such as 3.3V, 3.5V, and 5.0V, sharing similar electrical characteristics and protection features.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Compatible substitutes include other L4931 variants with different output voltages if the voltage level can be adjusted, or equivalent LDO regulators from other manufacturers offering 2.7V output in an 8-SOIC package with comparable current and thermal specifications.