L4931ABD120TR

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

The L4931ABD120TR is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a stable 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 overload protection mechanisms. The component is housed in an 8-SOIC surface-mount package and supports operation across a temperature range from -40°C to +125°C.

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

• Integrated electronic shutdown logic control for power management
• Internal current limiting and thermal overload protection circuits
• 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 voltage regulation in portable electronics
• Low noise power supply applications

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

Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration. Confirm RoHS compliance status as per latest manufacturer documentation. Check for obsolescence notices or lifecycle changes directly from STMicroelectronics before finalizing procurement plans.

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

Select this component when a fixed 12V output is required with moderate current capability. Ensure input voltage does not exceed 20V. Verify thermal dissipation requirements for the SO-8 package under maximum load conditions. Consider the 2% voltage accuracy tolerance inherent to the 'C' series designation if applicable.

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

This part belongs to the L4931 family of very low drop regulators designed for low power consumption. The family offers various output voltages and packages including SO-8, DPAK, and TO-92. The AB/C suffix denotes accuracy grades, while D indicates the SO-8 package type.

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

• L4931ABDT120TR

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

What is the typical supply current rejection (PSRR) for this device?

The PSRR is typically 64dB at 120Hz and 55dB at 10kHz.

Does this regulator support logic-controlled shutdown?

Yes, the L4931 series includes a TTL-compatible shutdown logic control function available in SO-8 packages.