L4931CD120-TR

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

The L4931CD120-TR is a fixed positive linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a fixed 12V output with a maximum continuous current of 250mA. The device operates within an input voltage range up to 20V and features a typical dropout voltage of 0.8V at full load. Quiescent current is specified at 1.6mA, with a maximum supply current of 7mA. It includes internal overcurrent and thermal shutdown protection. The component is housed in an 8-SOIC surface-mount package and supports an operating temperature range from -40°C to +125°C.

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

• Fixed 12V output regulation for stable power delivery
• Integrated overcurrent and thermal shutdown protection mechanisms
• Logic-controlled electronic shutdown capability for standby mode management

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

• Battery-powered systems requiring low quiescent current
• Local voltage regulation in portable electronics
• Low noise power supply circuits

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

Verify the specific suffix and package configuration against the official datasheet before procurement. Confirm that the 8-SOIC package matches the target PCB footprint. Check for RoHS compliance status and moisture sensitivity level requirements. Ensure the fixed 12V output aligns with system design specifications. Validate lead times as availability may vary.

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

Select this component when a fixed 12V rail is required with moderate current demands up to 250mA. Consider the 8-SOIC package for surface-mount assembly constraints. Evaluate the thermal performance under expected load conditions given the 0.8V dropout characteristic. Verify compatibility with input voltages up to 20V. Review the shutdown logic requirements if standby functionality is needed.

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

This part belongs to the L4931 series of very low drop regulators designed for low power applications. The series offers various output voltages and packages including SO-8, DPAK, and TO-92. The L4931CD variant specifically denotes a 2% output voltage accuracy tolerance at 25°C. The TR suffix indicates tape and reel packaging for automated assembly processes.

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

L4931ABD120TR is listed as a direct substitute option.