L4931CZ25-AP

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

The L4931CZ25-AP is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 2.5 V output with a maximum continuous current of 250 mA. The device features a typical dropout voltage of 400 mV and operates within an input voltage range up to 20 V. It includes internal current limiting and thermal shutdown protection for robust operation. The component supports a wide operating temperature range from -40 °C to +125 °C and maintains stability with only a 2.2 µF output capacitor.

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

• Integrated logic-controlled electronic shutdown function for power management
• Very low quiescent current consumption in both active and standby modes
• Internal protection against overcurrent conditions and excessive junction temperature

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

• Battery-powered portable electronic devices requiring efficient power regulation
• Low-noise analog circuit supply rails
• Embedded systems utilizing TTL-compatible shutdown control signals

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

Verify the specific suffix AP indicates the TO-92 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design accounts for the required 2.2 µF minimum output capacitance to maintain loop stability under all load conditions.

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

Select this component for applications demanding a fixed 2.5 V rail with moderate current capability. The TO-92 package suits through-hole designs where space constraints are less critical than cost efficiency. Consider the 2% output voltage accuracy specification for precision requirements.

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

This part belongs to the L4931 series of very low drop regulators available in multiple packages including SO-8, DPAK, PPAK, and TO-92. The series offers various fixed output voltages such as 3.3 V, 3.5 V, and 5 V. The L4931CZ25-AP specifically denotes the 2.5 V version in the TO-92-3 configuration.

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

Direct substitutes include other L4931 variants with different output voltages or packages, such as L4931CD33 for 3.3 V output in SO-8. Cross-reference pinouts and thermal characteristics when replacing with generic LDOs.