STK672-040

Ordering number: EN 5227A Thick Film Hybrid IC STK672-040 Microstep Operation-Supported 4-Phase Stepping Motor Driver (IO = 1.5A) Overview The STK672-040 is a unipolar constant-current choppertype externally-excited 4-phase stepping motor driver hybrid IC which uses MOSFET power devices. It has a microstep operation-supported 4-phase distributed controller built-in to realize a high torque, low vibration, low noise stepping motor driver using a simple control circuit. Package Dimensions unit: mm 4161 [STK672-040] Applications Printer, copier, and X-Y plotter stepping motor drivers Features Microstep sine-wave driver operation using only an external clock input (0.33Ω current detection resistor built-in) Microstep drive using only an external reference voltage setting resistor 2, 1-2, W1-2, 2W1-2, 4W1-2 phase excitation selectable using external pins Selectable vector locus (perfect circle mode, inside 1 mode, outside 2 modes) to match motor characteristics in microstep drive state Phase hold function during excitation switching Schmitt trigger inputs with built-in pull-up resistor (20kΩ) Monitor output pin enabling real-time confirmation of IC excitation The CLK and RETURN inputs provide an internal noise elimination circuit as well as CMOS Schmitt circuit to prevent malfunction due to impulse noise. 4-phase distribution switch timing selected externally to either CLK rising-edge only detection mode or both rising-edge and falling-edge detection mode ...