STMicroelectronics

L7985ATR

The L7985ATR is a high-performance stepper motor driver IC manufactured by STMicroelectronics. It is designed to drive unipolar or bipolar stepper motors with up to 5A per phase and a supply voltage range of 8V to 45V.

Description:

The L7985ATR is a monolithic integrated circuit in a compact SOIC-16W package. It features high-speed pulse input, microstepping resolution control, and advanced current control with short-circuit and over-temperature protection.

Features:

1. High-speed pulse input: The L7985ATR can accept pulse rates up to 2 MHz, making it suitable for high-speed applications.
2. Microstepping resolution control: The device offers 1/1, 1/2, 1/4, 1/8, 1/16, and 1/32 microstepping resolutions, allowing for precise control of motor positioning.
3. Advanced current control: The L7985ATR features a patented current control scheme that provides high efficiency and low heating, even at high current levels.
4. Short-circuit and over-temperature protection: The device includes built-in protection against short circuits and over-temperature conditions to ensure reliable operation and prevent damage to the motor or driver.
5. Low power consumption: The L7985ATR has a low quiescent current, making it suitable for battery-powered applications.
6. Compact SOIC-16W package: The small form factor of the L7985ATR makes it easy to integrate into a variety of applications.

Applications:

The L7985ATR stepper motor driver is suitable for a wide range of applications, including:

1. Industrial automation and robotics
2. Medical equipment
3. Office automation (e.g., printers, plotters, and scanners)
4. 3D printers and CNC machines
5. Camera positioning systems
6. Test and measurement equipment
7. Solar tracking systems

In summary, the L7985ATR is a versatile and high-performance stepper motor driver IC that offers a range of features, including high-speed pulse input, microstepping resolution control, and advanced current control with built-in protection. Its compact form factor and low power consumption make it suitable for a variety of applications, from industrial automation to battery-powered devices.