BUY LB1845 https://www.utsource.net/itm/p/1715027.html
PWM Current Control Stepping Motor DriverPWM
Description: The LB1845 is a bipolar stepping motor driver IC with a built-in micro-stepping controller. Features: Built-in micro-stepping controller Maximum output current of 1.2A Built-in thermal shutdown circuit Built-in over-current protection circuit Built-in lock detection circuit Built-in start-up circuit Built-in PWM current control circuit Operating voltage range of 4.5V to 16V Operating temperature range of -40°C to +85°C Applications: The LB1845 is suitable for use in applications such as printers, copiers, scanners, and other office automation equipment. It can also be used in various other applications such as industrial robots, vending machines, and other motor control systems. (For reference only)