The MPQ6609-AEC1 is a stepper motor driver with a built-in translator and current regulation. Current-sensing is performed internally and requires no external sense resistors. High integration and a small package make the MPQ6609-AEC1 a space-saving and cost-effective solution for stepper motor drives.

The MPQ6609-AEC1 operates across a 4V to 32V input voltage (V_IN) range. It can deliver an output current (I_OUT) up to 1A per phase, depending on the PCB design and thermal conditions. The device can operate a bipolar or unipolar stepper motor in full-, half-, quarter-, eighth-, 1/16-, and 1/32-step modes.

Internal safety and diagnostic features include rotor stall detection, open-load detection, low-temperature detection, over-current protection (OCP), V_IN over-voltage protection (OVP) and under-voltage protection (UVP), over-temperature (OT) warning, and OT shutdown.

Automatic hold current mode can lower the winding current to automatically save power when the full current is not required, such as when the motor is stopped or lightly loaded. The motor’s BEMF is measured and is available for advanced diagnostic and control functions via the serial interface. The serial interface sets control modes such as step mode, direction, I_OUT, and reading diagnostic registers. STEP and DIR input pins are also available to allow motor motion without serial bus transactions.

The MPQ6609-AEC1 is available in a QFN-18 (3mmx4mm) package, and is available in AEC-Q100 Grade 1.