L4931CDT50

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

The L4931CDT50 is a fixed positive linear low-dropout regulator manufactured by STMicroelectronics. It provides a stable 5V output with a maximum continuous current of 250mA. The device operates within an input voltage range up to 20V and features a typical dropout voltage of 0.8V at full load. It incorporates internal overcurrent and thermal shutdown protection mechanisms to ensure reliability under fault conditions. The component is housed in a DPAK surface-mount package, suitable for space-constrained designs requiring efficient power management.

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

• Integrated overcurrent and thermal shutdown protection for enhanced operational safety
• Requires only a small output capacitor for stability, reducing board space and cost
• Logic-controlled electronic shutdown function available in specific packages for power optimization

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

• Battery-powered portable electronic devices
• Local voltage regulation in embedded systems
• Low-noise power supply circuits

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

Verify the exact suffix designation during procurement, as variations such as TR indicate tape-and-reel packaging which may differ from standard tube configurations. Confirm RoHS compliance status and check for end-of-life notifications, as availability for this specific part number may be limited or discontinued depending on the manufacturing batch and regional distributor stock.

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

Select this component when a fixed 5V output is required with moderate current capabilities up to 250mA. Ensure the input voltage does not exceed the 20V maximum rating. Consider the thermal performance of the DPAK package relative to the expected ambient temperature and load current to determine if additional heatsinking is necessary for sustained operation.

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

This part belongs to the L4931 series of very low drop voltage regulators designed for low noise and low power applications. The series offers various output voltages and packages including SO-8, DPAK, and TO-92. The L4931CDT50 specifically utilizes the DPAK form factor, providing a robust surface-mount solution for industrial and consumer electronics requiring reliable linear regulation.

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

Compatible substitutes include other 5V LDO regulators with similar current ratings and package types, such as the LM1117-5.0 or AMS1117-5.0, provided pin compatibility and thermal requirements are met. Verify that alternative parts support the same input voltage range and offer comparable dropout characteristics.