MC3479

MC3479 Stepper Motor Driver The MC3479 is designed to drive a two−phase stepper motor in the bipolar mode. The circuit consists of four input sections, a logic decoding/sequencing section, two driver−stages for the motor coils, and an output to indicate the Phase A drive state. Features http://onsemi.com Single Supply Operation: 7.2 to 16.5 V 350 mA/Coil Drive Capability Clamp Diodes Provided for Back−EMF Suppression Selectable CW/CCW and Full/Half Step Operation Selectable High/Low Output Impedance (Half Step Mode) TTL/CMOS Compatible Inputs Input Hysteresis: 400 mV Minimum Phase Logic Can Be Initialized to Phase A Phase A Output Drive State Indication (Open−Collector) Pb−Free Package is Available* VM PDIP−16 P SUFFIX CASE 648C MARKING DIAGRAM 16 MC3479P AWLYYWWG Clk Clock Driver www.DataSheet4U.com L1 1 L2 CW/CCW CW/CCW Logic VD L3 Full/Half Step F/H Step Driver L4 OIC OIC A WL YY WW G = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package PIN CONNECTIONS VD L2 L1 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VM L3 L4 GND Phase A CW/CCW Full/Half Step Phase A Bias/Set GND GND Figure 1. Representative Block Diagram Bias/Set Clk OIC ORDERING INFORMATION Device MC3479P MC3479PG TA = 0° to +70°C Operating Temperature Range Package PDIP−16 PDIP−16 (Pb−Free) 25 Units / Rail CW/CCW Full/Half Step OIC Clk *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mountin...