The A4980KLPTR-T from Allegro MicroSystems is an Automotive Qualified Flexible Microstepping Motor Driver that is ideal for automotive stepper motors, engine management and headlamp positioning applications. It requires an input voltage of up to 50 V and provides an output current of less than 1.4 A. This motor driver is a versatile microstepping solution with a built-in translator for easy operation. It is designed for bipolar stepper motors, operating in full-, half-, quarter-, and sixteenth-step modes at up to 28 V and ±1.4 A. This motor driver offers versatile control through step and direction inputs or an SPI-compatible serial interface, allowing easy programming and diagnostic information reading. It incorporates a current regulator capable of operating in fixed-off-time or fixed-frequency PWM, featuring decay modes to effectively minimize motor noise and enhance step accuracy.

This motor driver IC offers programmable phase current tables via the serial interface, enabling the creation of unique microstep current profiles to significantly enhance motor performance. It utilizes a DMOS full bridge with synchronous rectification to control the current in each motor phase, improving power dissipation. This motor driver comes with comprehensive protections, including short circuit, low load current detection, stalled rotor detection, and chip-level safeguards like thermal warnings, overtemperature shutdown, and voltage lockout. It is available in a surface-mount package that measures 9.70 x 6.40 x 1.20 mm.