The L9959T-TR-D from STMicroelectronics is a state-of-the-art multiphase motor driver, designed to deliver high performance and reliability for automotive applications. This advanced system-on-chip solution integrates multiple functionalities to control small motors with precision and efficiency, making it an ideal choice for automotive manufacturers and designers.

Key Features

• High Integration: The L9959T-TR-D combines a voltage regulator, dual full-bridge drivers, and a serial communication interface in one compact package, reducing the need for external components and simplifying the design process.
• Robust Performance: Engineered to withstand the harsh conditions of automotive environments, this motor driver operates over a wide temperature range and is protected against overtemperature, undervoltage, and overcurrent conditions.
• Flexibility: With its multiphase capabilities, the L9959T-TR-D can drive both bipolar and unipolar stepper motors, as well as DC motors, providing versatility for various automotive applications such as HVAC flap control, headlamp positioning, and more.
• Energy Efficient: The device features low RDS(on) MOSFETs and a standby mode to minimize power consumption when the motor is not in active use, contributing to the overall energy efficiency of the automotive system.
• Diagnostic Functions: Equipped with comprehensive diagnostic capabilities, the L9959T-TR-D can detect and report faults, ensuring safe and reliable operation of the motor control system.

Applications

The L9959T-TR-D's robust design and versatile features make it suitable for a wide range of automotive applications, including:

• Automatic window lifters
• Seat positioning motors
• Electric power steering systems
• Engine cooling fan controllers

Technical Specifications

The L9959T-TR-D operates with a supply voltage range of 5.5V to 28V, and it is available in a PowerSSO-24 package, which is optimized for thermal performance and space-saving on the PCB. The device also supports a serial peripheral interface (SPI) for communication with microcontrollers, enabling precise control over motor functions.

For those seeking a high-quality, versatile motor driver that meets the stringent requirements of automotive applications, the L9959T-TR-D from STMicroelectronics offers a compelling solution.