L4931CZ33-AP

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

The L4931CZ33-AP is a positive fixed linear voltage regulator manufactured by STMicroelectronics, designed for low-dropout applications. It provides a fixed output voltage of 3.3V with a maximum continuous output current of 250mA. The device supports an input voltage range up to 20V and features a typical dropout voltage of 0.8V at full load. It operates within a temperature range of -40°C to +125°C and includes internal protection against overcurrent and thermal overload. The component is housed in a TO-92-3 through-hole package.

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

• Very low dropout voltage capability suitable for battery-powered systems
• Logic-controlled electronic shutdown function for power management
• Internal current limiting and thermal shutdown protection
• Requires only a small output capacitor for stability

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

• Battery-powered portable devices
• Low noise power supply circuits
• Local regulation in embedded systems
• Standby mode control applications

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

Verify the specific suffix 'AP' against the official datasheet to confirm package and tape/reel specifications. Confirm the manufacturing status as discontinued via the latest product change notice. Ensure compatibility with existing PCB footprints for the TO-92-3 package before procurement.

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

Select this component when a fixed 3.3V output is required with moderate current demands. Consider the TO-92-3 package for through-hole assembly needs. Evaluate the quiescent current requirements against system power budgets. Verify that the input voltage does not exceed the 20V maximum rating 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 voltage regulators from STMicroelectronics. The series offers various output voltages and packages including SO-8 and DPAK. The L4931CZ33-AP specifically denotes the 3.3V fixed output variant in the TO-92-3 package with C-grade accuracy.

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

Check for direct pin-compatible substitutes within the L4931 family such as L4931CD33Y for surface mount options. Verify electrical parameters match if considering cross-package replacements.