L4940D2T5

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

The L4940D2T5 is a three-terminal positive linear regulator from the L4940 series, manufactured by STMicroelectronics. It provides a fixed 5V output with a maximum continuous current of 1.5A and operates within an input voltage range up to 17V. The device features a typical dropout voltage of 500mV at full load and maintains a low quiescent current of 8mA. It is housed in a D2PAK surface-mount package designed for efficient thermal dissipation.

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

• Integrated thermal shutdown circuitry protects against overheating during high-power operation.
• Built-in short-circuit protection limits output current to prevent component damage.
• Reverse polarity protection safeguards the device against incorrect power supply connections.

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

• Battery-powered equipment requiring extended operational life
• Industrial control systems needing stable voltage regulation
• Consumer electronics utilizing distributed supply architectures

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

Verify the specific ordering suffix to confirm the tape and reel packaging configuration. Ensure the selected variant matches the required output voltage and package type for your design. Confirm RoHS compliance status before finalizing procurement orders.

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

Select this component when a fixed 5V rail is required with high current capability. The D2PAK package offers superior thermal performance compared to standard through-hole options. Consider the low dropout characteristic for applications where input voltage margins are tight.

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

This part belongs to the L4940 series of very low drop 1.5A regulators. The series includes variants with different fixed output voltages such as 8.5V, 10V, and 12V. These devices share common internal protection features and are available in TO-220, TO-220FP, and D2PAK packages.

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

L4940D2M5 is a compatible alternative within the same series offering identical electrical specifications and functionality in a similar surface-mount form factor.