NCV70627MW002AR2G

The NCV70627MW002AR2G from ON Semiconductor is a single-chip micro-stepping motor driver designed for mechatronic solutions. It integrates a position controller and a control/diagnostic interface, enabling remote connection with a LIN master.

Key features include micro-stepping technology and sensorless step-loss detection, which prevents position loss and stops the motor during stalls. This allows for accurate position calibration and semi-closed loop operation. The device supports peak currents up to 800 mA and low-temperature boost currents up to 1100 mA. It utilizes fixed-frequency PWM current control with automatic selection of fast and slow decay modes, and does not require external fly-back diodes.

The integrated position controller is configurable via OTP or RAM for various motor types and positioning parameters. It acts as a slave on the LIN bus, providing status information like actual position and error flags to the master. The chip is built using I3T50 technology, supporting high-voltage analog circuitry and digital functionality on the same chip, making it suitable for automotive applications with fluctuating battery supplies.

Protection features include overcurrent protection, open-circuit detection, high and low temperature warnings, LIN bus short-circuit protection, and enhanced under-voltage management. The device also offers power-saving modes with low powerdown supply current and a 3.3V regulator with wake-up on LIN activity. EMI compatibility is enhanced through integrated slope control for the LIN bus and HV outputs.

Available in SSOP-EP 36 LEAD and QFN32, 5x5 packages, the NCV70627MW002AR2G is compliant with 14 V automotive systems.