Datasheet

LMD18245
www.ti.com SNVS110E –APRIL 1998–REVISED APRIL 2013
The Typical Application
Figure 14 shows the typical application, the power stage of a chopper drive for bipolar stepper motors. The 20
kΩ resistor and 2.2 nF capacitor connected between RC and ground set the off-time at about 48 μs, and the 20
kΩ resistor connected between CS OUT and ground sets the gain at about 200 mA per volt of the threshold for
chopping. Digital signals control the thresholds for chopping, the directions of the winding currents, and, by
extension, the drive type (full step, half step, etc.). A μprocessor or μcontroller usually provides the digital control
signals.
Figure 14. Typical Application Circuit for Driving Bipolar Stepper Motors
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