L4931ABD50-TR

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

The L4931ABD50-TR is a positive fixed linear low-dropout voltage regulator manufactured by STMicroelectronics. It provides a stable 5V output with a maximum current capability of 250mA. The device features a very low dropout voltage, typically 0.4V, and operates within an input voltage range up to 20V. It incorporates internal current limiting and thermal shutdown protection for robust operation. The component is housed in a DPAK surface-mount package and supports an operating junction temperature range from -40°C to +125°C.

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

• Very low dropout voltage characteristic suitable for battery-powered systems
• Logic-controlled electronic shutdown function for power management
• Integrated overcurrent and thermal overload protection mechanisms

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

• Battery-powered portable electronic devices
• Low noise power supply circuits
• Local regulation in embedded systems requiring standby modes

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

Verify the specific suffix 'AB' indicates a tighter output voltage tolerance compared to standard variants. Confirm the 'D' prefix corresponds to the DPAK package type required for your PCB layout. Ensure the '-TR' suffix matches your reel quantity requirements. Cross-reference the manufacturer datasheet for the latest RoHS compliance status and lead times before finalizing procurement orders.

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

Select this component when a fixed 5V output is required with moderate current demands up to 250mA. The DPAK package offers a balance between thermal performance and board space efficiency. Consider the AB grade if precise voltage accuracy is critical for the application. Evaluate the thermal dissipation capabilities based on the expected ambient temperature and load conditions.

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

This part belongs to the L4931 family of low-dropout regulators designed for low-power applications. The family includes various output voltages and packages such as SO-8, TO-92, and DPAK. The L4931 series is characterized by its low quiescent current and minimal external component requirements, making it efficient for space-constrained designs.

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

Direct substitutes include other L4931 variants with different output voltages or packages, such as L4931CD50-TR. Verify pin compatibility and thermal characteristics when substituting. Check for updated manufacturing statuses as some older revisions may be discontinued.