L4940V10

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

The L4940V10 is a fixed positive linear low-dropout regulator (LDO) manufactured by STMicroelectronics, providing a precise 10 V output with a maximum continuous current of 1.5 A. It operates within an input voltage range up to 17 V and features a typical dropout voltage of 450 mV at 1 A load. The device incorporates internal thermal shutdown, short-circuit protection, reverse polarity protection, and current limiting. It is housed in a TO-220 package and supports an operating junction temperature range from -40 °C to +150 °C.

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

• Very low dropout voltage for efficient battery-powered applications
• Integrated thermal shutdown and safe area protection
• Internal short-circuit and reverse polarity protection
• Low quiescent current consumption

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

• Battery-powered equipment requiring extended battery life
• Industrial control systems
• Consumer electronics power regulation

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

Verify the specific ordering code L4940V10 against the manufacturer's official documentation to confirm package type and output voltage accuracy. Confirm RoHS compliance status and check for any product lifecycle notices such as obsolescence or last-time buy notifications before finalizing procurement plans.

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

Select this component when a stable 10 V supply is required with high current capability up to 1.5 A. Ensure the input voltage remains within the specified limits and consider the thermal resistance characteristics of the TO-220 package for adequate heat dissipation under full load conditions.

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

The L4940V10 belongs to the L4940 series of three-terminal positive regulators available in multiple fixed output voltages including 5 V, 8.5 V, and 12 V. This series is designed for industrial and consumer applications where low input-to-output voltage differential is critical for system efficiency.

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

Compatible substitutes within the same family include L4940V5, L4940V85, and L4940V12, which share identical pinouts and protection features but offer different fixed output voltages.