L4931CD80

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

The L4931CD80 is a positive fixed linear voltage regulator from STMicroelectronics, delivering an output of 8.0 V with a maximum current of 250 mA. It operates within an input voltage range up to 20 V and features a typical dropout voltage of 0.4 V. The device includes internal overcurrent and thermal shutdown protection. It maintains stability with only a 2.2 µF output capacitor. The component is housed in an 8-SOIC package and supports an operating temperature range from -40 °C to +125 °C.

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

• Very low dropout voltage capability for efficient power management
• Logic-controlled electronic shutdown function for standby mode operation
• Internal current and thermal limit protection mechanisms
• Requires minimal external capacitance for circuit stability

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

• Battery-powered systems requiring low quiescent current
• Local regulators with TTL compatible shutdown control
• Low noise power supply circuits
• Low power embedded applications

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

Verify the specific suffix and package configuration against the official datasheet to ensure compatibility with your design requirements. Confirm that the 8-SOIC package variant matches your PCB footprint constraints. Check for any recent production change notices regarding packaging or material composition updates before finalizing procurement orders.

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

Select this component when an 8.0 V fixed output is required with high efficiency under low voltage drop conditions. Ensure the load current does not exceed 250 mA and that the input voltage remains within the 20 V maximum limit. Consider the thermal performance in the SO-8 package if operating near maximum current limits.

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

This part belongs to the L4931 family of very low drop voltage regulators with inhibit functions. The family offers various output voltages and packages including SO-8, DPAK, and TO-92. The CD80 variant specifically provides an 8.0 V output in the surface-mount SO-8 package, targeting applications needing precise regulation with minimal external components.

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

Check for other variants within the L4931 series such as L4931CDxx for different fixed voltages. Verify pinout compatibility if substituting with similar LDOs from other manufacturers. Ensure the replacement supports the same shutdown logic interface and thermal characteristics.