STMicroelectronics L9935TR Dual Solenoid Driver

The L9935TR from STMicroelectronics is a sophisticated dual solenoid driver integrated circuit (IC) designed to efficiently manage and drive solenoids in automotive and industrial applications. This high-performance device is engineered to provide reliable operation and precise control, making it an ideal solution for systems requiring the actuation of solenoids with high accuracy and consistency.

Key Features

• Voltage Range: The L9935TR operates within a wide voltage range, accommodating various automotive battery levels, including during low voltage conditions.
• Current Control: It features programmable peak and hold current control, ensuring optimal power usage and reducing thermal dissipation within the solenoids.
• Diagnostic Functions: The device includes built-in open-load detection in both on and off states, short-circuit protection, and over-temperature shutdown, providing comprehensive diagnostic capabilities for system safety and reliability.
• Serial Interface: A Serial Peripheral Interface (SPI) allows for easy integration and communication with a microcontroller, enabling detailed control and monitoring of the driver's performance.

Applications

The L9935TR is particularly suited for automotive environments where precision and durability are paramount. Common applications include:

• Variable Valve Timing (VVT) systems
• Fuel injection systems
• Automatic transmission systems

Package and Quality

The IC is available in a PowerSSO-24 package, which is designed to optimize the thermal performance and minimize the PCB space required. The L9935TR meets the stringent quality standards of the automotive industry, and its robust design ensures long-term reliability under harsh operating conditions.

Conclusion

With its advanced features, the L9935TR dual solenoid driver from STMicroelectronics stands out as a powerful and reliable component for driving and controlling solenoids. Its integration of diagnostic capabilities and a serial communication interface makes it a versatile choice for designers looking to enhance system functionality while maintaining high safety and performance standards.