L4931ABZ120AP

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

The L4931ABZ120AP is a fixed-output linear low-dropout regulator from STMicroelectronics, providing a stable 12V output with a maximum current of 250mA. It operates within an input voltage range up to 20V and features a typical dropout voltage of 0.4V at full load. The device incorporates internal thermal overload and short-circuit protection mechanisms. It maintains operation across an extended temperature range from -40°C to +125°C. The component utilizes a TO-92-3 through-hole package for reliable mounting.

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

• Very low dropout voltage capability ensures efficient regulation under minimal input-to-output differentials.
• Integrated electronic shutdown logic allows for precise power management and standby mode control.
• Robust protection circuitry includes internal current limiting and thermal shutdown safeguards.

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

• Battery-powered portable electronic systems requiring low quiescent current
• Local voltage regulation in embedded circuits with space constraints
• Low-noise power supply stages for sensitive analog components

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

Verify the specific suffix 'AB' indicates the ±1% output voltage accuracy selection at 25°C. Confirm the 'Z' and 'AP' suffixes correspond to the TO-92-3 package and RoHS compliance status as defined by STMicroelectronics documentation. Cross-reference the manufacturer part number against official datasheets to ensure correct pinout and electrical specifications before integration.

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

Select this component when a fixed 12V output is required with high precision (±1%). Ensure the application demands a maximum load current not exceeding 250mA. Verify that the input voltage remains within the 20V absolute maximum rating. Consider the TO-92-3 package size for through-hole assembly requirements and check if the thermal performance meets the system's dissipation needs.

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

This part belongs to the L4931 family of very low drop voltage regulators designed for low power applications. The family offers various output voltages and packages including SO-8, DPAK, and TO-92. The AB suffix denotes tighter voltage tolerance compared to the C series. These regulators are optimized for battery life extension due to their low quiescent current characteristics.

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

Direct substitutes include other L4931 variants with matching 12V output and TO-92-3 packaging, such as L4931CZ120-AP, noting the difference in voltage accuracy tolerance. Ensure any replacement maintains the same pin configuration and thermal protection features.