The AMIS-30623 and AMIS-30624 stepper motor controller ICs feature sensorless stall detection. The ICs are designed to improve reliability and reduce component count, board space, cost, and development time in a variety of automotive and industrial motion control applications. Well suited for remote and multiple axes positioning applications, the AMIS-30623 and AMIS-30624 ICs offer LIN and serial (12C) interface connectivity, respectively. Thanks to the sensorless stall detection feature, engineers can implement silent, accurate position calibration and semi-closed loop operation when approaching mechanical end stops. An integrated motion qualification mode allows engineers to define a set of motion parameters, such as torque and acceleration-deceleration profile. This capability is said to help eliminate noise and vibration at end-stops and improve motion control accuracy and reliability without optical encoders, position sensors, and software algorithms. Because the AMIS-30623 offers a dedicated LIN interface, the device is ideal for mechatronics solutions connected remotely to an LIN master. This unit’s dedicated serial interface also allows the AMIS-30623 to be used in applications that feature the motor controller IC as a peripheral device located next to a host microcontroller on a single PCB. Specific applications include: headlamp leveling and swiveling; automotive HVAC designs; surveillance camera control; professional lighting equipment; industrial X, Y, Z tables; and manufacturing robots. Both the AMIS-30623 and AMIS-30624 operate at temperatures from -40° to +125°C and deliver programmable peak currents of up to 800 mA. Engineers can configure an on-chip position controller for different motor types, positioning ranges, and parameters such as speed, acceleration, and deceleration. The devices also incorporate a hold current feature. A power down supply current of under 100 µA ensures minimum power consumption in standby mode. The AMIS-30623 and AMIS-30624 are available in SOIC-20 or NQFP-32 packaging. Pricing is approximately $4.40 per for orders in excess of 10,000 pieces.