L4931CZ120-AP

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

The L4931CZ120-AP is a positive fixed low-dropout linear 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 of 4V to 20V and maintains regulation across an extended temperature range from -40°C to +125°C. It features a typical dropout voltage of 400mV at full load and utilizes a TO-92-3 through-hole package for compact integration.

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

• Very low dropout voltage capability ensures efficient power delivery in battery-powered systems
• Logic-controlled electronic shutdown function reduces total power consumption during standby modes
• Integrated internal current limiting and thermal protection safeguards against overload conditions

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

• Battery-powered portable devices requiring low quiescent current
• Local voltage regulation in embedded systems with TTL-compatible control signals
• Low noise power supply circuits for sensitive analog components

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

Verify the specific suffix 'AP' against official STMicroelectronics documentation to confirm package type and availability status. Ensure the required output voltage matches the fixed 12V specification, as other variants exist within the L4931 family. Cross-reference the TO-92-3 pinout with your schematic before finalizing procurement orders.

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

Select this component when a fixed 12V rail is needed with minimal external capacitance requirements. The TO-92 package suits through-hole designs where space allows. Consider the 250mA limit for load requirements and verify that the input voltage remains above the minimum threshold to maintain regulation under all operating conditions.

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 and DPAK. The L4931CZ120-AP specifically targets through-hole implementations with a fixed 12V output, distinguishing it from adjustable or surface-mount variants in the same product line.

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

Direct substitutes include other L4931 variants with matching 12V output and TO-92 packaging. Verify pin compatibility and thermal characteristics when replacing with generic LDOs. Check datasheets for equivalent dropout voltage and current limits to ensure functional parity.