L4931CDT120-TR

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

The L4931CDT120-TR is a fixed-output linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a stable 12V output with a maximum continuous current of 250mA. The device operates from an input voltage 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. Power supply rejection ratio ranges from 64dB at 120Hz to 55dB at 10kHz. It includes internal overcurrent and thermal overload protection and functions within an operating temperature range of -40°C to +125°C.

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

• Integrated overcurrent and thermal overload protection for enhanced circuit reliability
• Logic-controlled electronic shutdown capability available in specific package variants
• Requires only a 2.2 µF output capacitor for stability

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

• Battery-powered systems requiring low quiescent current
• Local regulation in embedded electronics
• Low noise power supply applications

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

Verify the exact suffix against official manufacturer documentation to confirm package type and shipping format. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Ensure the selected variant matches the required output voltage tolerance and thermal performance specifications for the target application environment.

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 DPAK package for surface-mount assembly where thermal dissipation is manageable. Verify that the input voltage remains within the 20V maximum limit and that the dropout voltage characteristics align with the system's minimum input requirements under load.

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

This part belongs to the L4931 series of very low drop voltage regulators designed for low power consumption. The series offers various output voltages and packages including SO-8, DPAK, and TO-92. The 'C' designation indicates a 2% output voltage accuracy at 25°C, while the 'T120' specifies the 12V fixed output and DPAK packaging configuration.

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

L4931ABDT120-TR: Offers 1% output voltage accuracy instead of 2%. Other L4931 variants with different output voltages or packages may serve as functional substitutes if electrical parameters are compatible.