L9911K

Special Purpose Regulators Overview

The L9911K is a single-output automotive application voltage regulator IC manufactured by STMicroelectronics. It operates within an input voltage range of 7V to 18V and supports junction temperatures from -40°C to 150°C. The device is housed in an 8-Multiwatt package with straight leads, designed for through-hole mounting. This component is classified as obsolete and no longer in production.

Special Purpose Regulators Feature Summary

• Designed specifically for automotive power supply applications
• Capable of operating in high-temperature environments up to 150°C

Special Purpose Regulators Applications

• Automotive electronic systems
• General power supply regulation

Special Purpose Regulators Procurement Notes

Verify the obsolete status of the L9911K before initiating any procurement process. Confirm that the intended design can accommodate end-of-life components or transition to the recommended substitute, such as the L9911V, to ensure long-term supply chain stability and compliance with manufacturing requirements.

Special Purpose Regulators Selection Notes

Select this component only if legacy compatibility is required, as it is discontinued. Evaluate the L9911V as a primary alternative due to its similar specifications and automotive focus. Ensure the 8-Multiwatt through-hole package fits the existing PCB layout constraints without modification.

Special Purpose Regulators Part Context

The L9911K belongs to the L9911 family of specialized voltage regulators intended for robust automotive environments. It provides stable output regulation under varying input conditions typical of vehicle electrical systems. The Multiwatt package offers thermal performance suitable for industrial and automotive duty cycles.

Special Purpose Regulators Replacement Considerations

The L9911V is documented as a similar replacement part. Verify pinout compatibility and parameter alignment before substitution.