LB11946-E

PWM电流控制电机驱动器

LB11946 is a PWM current control stepper motor driver that implements PWM control bipolar drive with a fixed off time. It features 15 current setting levels using a fixed VREF voltage and support for micro-stepping drive from 1-2 phase excitation drive to 4W1-2 phase excitation drive. This device is optimal for driving stepper motors such as those used for carriage drive and paper feed in printers.

Features

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PWM current control, with a fixed off time

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Logic input serial-parallel converter allows 1-2,W1-2, 2W1-2 and 4W1-2 phase excitation drive

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Current attenuation switching function with slow decay, fast decay, and mixed decay modes

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Integrated upper and lower side diodes