The L9959S from STMicroelectronics is a sophisticated door actuator driver integrated circuit (IC) designed for automotive applications. This component is engineered to drive door locks, rearview mirrors, and other small motors within the vehicle, providing a reliable and efficient solution for manufacturers and designers in the automotive industry.

Key Features

• Multiple Output Stages: The L9959S includes two high-side outputs and two low-side outputs, enabling it to control various types of loads with precision and flexibility.
• Diagnostic Functions: Advanced diagnostic capabilities are built into the IC to detect and report issues such as open load, short circuit to battery, and overtemperature conditions, ensuring high reliability and safety in automotive environments.
• Programmable Current Limitation: The device offers programmable current limitation to protect against overcurrent conditions, which can extend the lifespan of the motor and prevent damage to the driver itself.
• Wide Operating Voltage Range: The L9959S operates over a broad voltage range, making it suitable for use in a variety of automotive electrical systems.

Applications

The L9959S is primarily used in the automotive sector for applications such as:

• Vehicle door lock actuators
• Power foldable rearview mirrors
• Small motor drivers for various automotive functions

Technical Specifications

• Supply Voltage Range: 6V to 27V
• Operating Temperature Range: -40°C to 150°C
• Package: PowerSSO-24 with exposed pad

The L9959S is available in a compact PowerSSO-24 package with an exposed pad for enhanced thermal dissipation. With its robust design and comprehensive feature set, the L9959S is an excellent choice for automotive engineers looking to improve the performance and reliability of their door actuation systems.