L99DZ80/81 Door Actuator Drivers STMicroelectronics L99DZ80/81 Door Actuator Drivers are designed for state-of-the-art automotive door-module applications. They employ a scalable actuator-driving concept, which includes package and software compatibility with the wide variety of door electronics used by the industry. The actuator drivers on the STMicroelectronics L99DZ80/81 support all regular door-module loads such as window lifting, lock motors, mirror leveling, mirror retraction, defrosters, and several lighting functions from incandescent bulbs to LEDs.