L4931ABD25

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

The L4931ABD25 is a positive fixed-output linear voltage regulator from STMicroelectronics, providing a stable 2.5V output with a maximum continuous current of 250mA. It operates within an input voltage range up to 20V and features a very low dropout voltage of approximately 0.4V. The device includes internal current limiting and thermal shutdown protection for robust operation. It is housed in an 8-SOIC surface-mount package and supports a wide operating temperature range from -40°C to +125°C.

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

• Very low dropout voltage enabling efficient regulation near the input rail
• Logic-controlled electronic shutdown function for power management
• Internal overcurrent and thermal overload protection mechanisms

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

• Battery-powered portable electronic systems
• Low noise analog circuit power supplies
• Local voltage regulation in embedded boards

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

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and specific packaging variants prior to ordering. Check for obsolescence notices as this part may be discontinued. Ensure supply chain stability for long-term production requirements.

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

Select this regulator for applications requiring precise 2.5V regulation with minimal voltage drop. Consider the 8-SOIC package for surface-mount assembly constraints. Evaluate thermal performance under maximum load conditions to ensure adequate heat dissipation without external heatsinks.

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

This component belongs to the L4931 family of very low drop regulators designed for low-power applications. The series offers various fixed output voltages and packages including SO-8, DPAK, and TO-92. The AB suffix indicates a tighter voltage accuracy tolerance compared to standard C-series variants.

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

• L4931CD25
• L4931ABD27

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

What is the typical quiescent current consumption?

The typical quiescent current is 600 µA in ON mode and 50 µA in OFF mode.

Does the L4931ABD25 support a shutdown feature?

Yes, it includes a TTL-compatible shutdown logic control function available in the SO-8 package.