STMicroelectronics

L9856

L9856 Description

The L9856 is a high-side gate driver IC designed by STMicroelectronics, a leading manufacturer of semiconductor products. This single-channel gate driver is housed in a surface-mount 8SO package, making it suitable for compact and high-density PCB designs. The L9856 is designed to operate within a supply voltage range of 4.4V to 6.5V, providing flexibility in power supply requirements. It features a maximum high-side voltage of 150V (bootstrap), enabling it to drive high-voltage applications efficiently. The IC supports a peak output current of 500mA for both sourcing and sinking, ensuring robust performance in demanding conditions.

L9856 Features

• Single Channel Design: The L9856 is designed as a single-channel gate driver, simplifying the design process for applications requiring a single high-side driver.
• High-Side Voltage Capability: With a maximum high-side voltage of 150V (bootstrap), the L9856 is ideal for high-voltage applications, providing a significant advantage over similar models with lower voltage capabilities.
• Fast Rise and Fall Times: The typical rise and fall times of 100ns ensure rapid switching, minimizing power loss and improving overall system efficiency.
• Inverting Input Type: The inverting input type allows for straightforward control and integration with various control circuits.
• Surface Mount Package: The 8SO surface-mount package is suitable for automated assembly processes, reducing production costs and improving reliability.
• Compliance and Reliability: The L9856 is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has a moisture sensitivity level (MSL) of 3, making it suitable for standard manufacturing processes.
• Peak Output Current: The ability to source and sink up to 500mA of peak current ensures robust performance, even in high-current applications.

L9856 Applications

The L9856 is well-suited for a variety of high-voltage applications where a single-channel gate driver is required. Specific use cases include:

• Power Supply Circuits: Ideal for driving high-side MOSFETs in power supply circuits, where rapid switching and high current handling are essential.
• Motor Control: Suitable for driving high-side switches in motor control applications, ensuring efficient power delivery and control.
• Automotive Electronics: Given its high voltage capability and robust performance, the L9856 can be used in automotive applications where reliability and high performance are critical.
• Industrial Control Systems: The L9856 can be integrated into industrial control systems, providing reliable gate driving for high-voltage switches and actuators.

Conclusion of L9856

The L9856 gate driver IC from STMicroelectronics offers a robust and efficient solution for high-voltage applications. Its single-channel design, high-side voltage capability, and fast switching times make it an ideal choice for power supply circuits, motor control, automotive electronics, and industrial control systems. The surface-mount package ensures ease of integration and reliability in manufacturing processes. While the product is now obsolete, its unique features and performance benefits continue to make it a valuable component for specific applications.