Description
The L6223 is a programmable integrated system for driving a unipolar stepper motor. It is realized in Multipower BCD technology. The DMOS output stage, realized by a single upper DMOS switch and four lower DMOS, can deliver up to 1A/phase with motor supply voltages up to 46V. All inputs are CMOS and microprocessor compatible. An internal 6-bit shift register allows the device to be programmed to select different duty cycles in open loop mode and different chopping frequencies in closed loop mode. When the current control is in closed loop mode it is also possible to select a reduced current chopping level to optimize system efficiency. The L6223 is de1/33