STMicroelectronics L9959U-TR-D: An Advanced Door Actuator Driver

The L9959U-TR-D is a state-of-the-art door actuator driver from STMicroelectronics, designed to meet the demanding requirements of automotive power door lock systems. This sophisticated integrated circuit is capable of driving inductive, resistive or capacitive loads, making it a versatile solution for a variety of door control applications.

Key Features

• High Integration: The L9959U-TR-D integrates two high-side drivers and two low-side drivers, allowing for the control of bidirectional motors with ease.
• Diagnostic Functions: The device is equipped with comprehensive diagnostic capabilities, including open-load detection in off-state, short-circuit to ground or battery, and overtemperature shutdown, ensuring reliable operation and safety.
• Protection Features: It includes under-voltage shutdown, overvoltage clamp, and loss of ground and supply protections, safeguarding the device and the system it controls against a range of electrical hazards.

Performance and Efficiency

STMicroelectronics has engineered the L9959U-TR-D for optimal performance in automotive environments. The device operates over a wide voltage range and is characterized by its low quiescent current. Additionally, it has been designed for low electromagnetic emissions, minimizing interference with other electronic systems in the vehicle.

Applications

While primarily aimed at power door lock systems, the L9959U-TR-D's versatile nature makes it suitable for a range of automotive applications, including but not limited to power latches, liftgate latches, and fuel flap control. Its robustness and reliability also make it an excellent choice for other in-vehicle systems that require high-endurance and fault-tolerant driver capabilities.

Package and Availability

The L9959U-TR-D is available in a small outline package, ensuring a compact footprint for space-constrained applications. The device is also provided in tape and reel packaging, facilitating efficient assembly processes for high-volume production.

With its advanced features and dependable performance, the L9959U-TR-D from STMicroelectronics represents a premier solution for automotive actuator driving needs.