The L9959SD from STMicroelectronics is a sophisticated door actuator driver designed to cater to the automotive industry's demand for reliable and efficient control of vehicle door functions. This integrated circuit is part of STMicroelectronics' extensive portfolio of automotive-grade products, ensuring high-quality performance under the rigorous conditions typical of automotive applications.

Key Features

• Multiple Output Stages: The L9959SD features dual H-bridge drivers capable of operating two DC motors (or four solenoids) for lock and unlock functions.
• Advanced Diagnostics: It comes with comprehensive diagnostic capabilities, including open-load detection in ON and OFF state, short-circuit to battery and ground, over-temperature shutdown, and under-voltage shutdown, providing critical feedback for system monitoring and safety.
• High-Voltage Capability: The device can handle operating voltages up to 28V, making it suitable for a wide range of automotive applications where voltage fluctuations are common.
• Programmable Current Profile: The L9959SD allows for programmable current sense ratio and time-controlled operation, ensuring precise control over the actuator's movement and force.

Applications

Designed for automotive environments, the L9959SD is ideal for controlling door locks, latches, and other actuators within the vehicle. Its robust design and comprehensive feature set make it an essential component for enhancing vehicle security and convenience.

Technical Specifications

• Supply Voltage: 6V to 28V
• Output Current: Up to 6.5A (each H-bridge)
• Operating Temperature Range: -40°C to 150°C
• Package: SO-24 (Wide Body)

In conclusion, the L9959SD door actuator driver from STMicroelectronics provides automotive designers with a reliable, high-performance solution for door actuation needs. With its robust construction and advanced features, this driver is engineered to meet the stringent requirements of modern vehicle systems.