STK672-040 Description
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...
STK672-040 Key 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 microste
- 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 malfu
- 4-phase distribution switch timing selected externally to either CLK rising-edge only detection mode or both rising-edge
- ENABLE pin for excitation current cutoff, thereby reducing system current drain when driver is stopped