Texas Instruments

UC3717AQ

UC3717AQ Description

The UC3717AQ is a half-bridge driver IC designed by Texas Instruments, specifically tailored for inductive load applications such as stepper motors and general-purpose motor control. This IC features a half-bridge output configuration with two channels, each capable of delivering up to 1A of output current. It operates within a supply voltage range of 4.75V to 5.25V and can handle load voltages from 10V to 46V. The UC3717AQ is equipped with a bootstrap circuit, which simplifies the design and enhances performance in high-side switching applications. It also includes over-temperature fault protection to ensure reliable operation under varying conditions.

The UC3717AQ is housed in a surface-mount package, specifically a 20-pin PLCC (Plastic Leaded Chip Carrier), making it suitable for compact and high-density PCB designs. The operating temperature range extends from 0°C to 150°C (TJ), making it suitable for a wide range of industrial and automotive applications. This IC is REACH unaffected and ROHS3 compliant, ensuring it meets the latest environmental and regulatory standards. The moisture sensitivity level (MSL) is rated at 2 (1 year), indicating its robustness against moisture-related issues.

UC3717AQ Features

• Half Bridge Output Configuration: The UC3717AQ features a half-bridge output configuration with two channels, each capable of delivering up to 1A of output current. This design is ideal for driving inductive loads such as stepper motors and general-purpose motor control applications.
• Bootstrap Circuit: The inclusion of a bootstrap circuit simplifies the design and enhances performance in high-side switching applications, ensuring efficient and reliable operation.
• Over-Temperature Fault Protection: This feature ensures the IC remains within safe operating temperatures, preventing damage and extending the lifespan of the device.
• Wide Operating Voltage Range: The UC3717AQ operates within a supply voltage range of 4.75V to 5.25V and can handle load voltages from 10V to 46V, providing flexibility in various power supply scenarios.
• Surface-Mount Package: The 20-pin PLCC package is ideal for compact and high-density PCB designs, making it suitable for space-constrained applications.
• Wide Operating Temperature Range: With an operating temperature range of 0°C to 150°C (TJ), the UC3717AQ is suitable for a wide range of industrial and automotive applications.
• Environmental Compliance: The UC3717AQ is REACH unaffected and ROHS3 compliant, ensuring it meets the latest environmental and regulatory standards.
• Moisture Sensitivity Level: MSL 2 (1 year) rating ensures the IC is robust against moisture-related issues, enhancing its reliability in various environmental conditions.

UC3717AQ Applications

The UC3717AQ is ideal for applications requiring precise control of inductive loads, such as stepper motors and general-purpose motor control. Its half-bridge output configuration and bootstrap circuit make it particularly suitable for high-side switching applications, where efficient and reliable performance is crucial. The wide operating voltage range and temperature range further enhance its versatility, making it suitable for a variety of industrial and automotive applications. Specific use cases include:

• Stepper Motor Control: The UC3717AQ's ability to drive inductive loads makes it ideal for controlling stepper motors in applications such as CNC machines, 3D printers, and robotics.
• General-Purpose Motor Control: The IC's robust design and wide operating range make it suitable for general-purpose motor control applications, including fans, pumps, and other industrial motors.
• High-Side Switching Applications: The bootstrap circuit simplifies the design and enhances performance in high-side switching applications, ensuring efficient and reliable operation.

Conclusion of UC3717AQ

The UC3717AQ is a versatile and reliable half-bridge driver IC designed for inductive load applications. Its unique features, such as the bootstrap circuit and over-temperature fault protection, provide significant advantages over similar models. The wide operating voltage and temperature range, combined with its surface-mount package, make it suitable for a variety of applications, including stepper motor control and general-purpose motor control. Despite being marked as obsolete, the UC3717AQ remains a robust choice for applications requiring precise control and high reliability.