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MC3479

Motorola
Part Number MC3479
Manufacturer Motorola
Description STEPPER MOTOR DRIVER
Published Jul 30, 2005
Detailed Description Order this document by MC3479/D MC3479 Stepper Motor Driver The MC3479 is designed to drive a two–phase stepper motor i...
Datasheet PDF File MC3479 PDF File

MC3479
MC3479

Overview
Order this document by MC3479/D 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.
• Single Supply Operation: 7.
2 to 16.
5 V STEPPER MOTOR DRIVER SEMICONDUCTOR TECHNICAL DATA • • • • • • • • • 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) Available in Standard DIP and Surface Mount P SUFFIX PLASTIC PACKAGE CASE 648C Figure 1.
Representative Block Diagram VM PIN CONNECTIONS VD 1 2 3 4 5 Bias/Set 6 7 8 16 15 14 13 12 11 10 9 VM L3 L4 Gnd Phase A CW/CCW Full/Half Step L1 Clk Clock Driver Gnd L2 L1 L2 CW/CCW CW/CCW Logic VD L3 Full/Half Step F/H Step Driver Clk OIC (Top View) L4 VM VD L2 2 1 L1 3 Gnd Gnd Gnd 4 5 6 7 8 9 Clk 10 11 12 13 Full/Half Step OIC Phase A CW/CCW 20 19 18 L4 17 Gnd 16 Gnd 15 Gnd 14 Gnd L3 OIC OIC Phase A Bias/Set Gnd Gnd Bias/Set ORDERING INFORMATION Device MC3479P Operating Temperature Range TA = 0° to +70°C Package Plastic CW/CCW Full/Half Step OIC Clk © Motorola, Inc.
1996 INPUT TRUTH TABLE Input Low CW Full Step Hi Z Input High CCW Half Step Low Z Positive Edge Triggered Rev 1 MOTOROLA ANALOG IC DEVICE DATA 1 MC3479 MAXIMUM RATINGS Rating Supply Voltage Clamp Diode Cathode Voltage (Pin 1) Driver Output Voltage Drive Output Current/Coil Input Voltage (Logic Controls) Bias/Set Current Phase A Output Voltage Phase A Sink Current Junction Temperature Storage Temperature Range Symbol VM VD VOD IOD Vin IBS VOA IOA TJ Tstg Value + 18 VM + 5.
0 VM + 6.
0 ± 500 – 0.
5 to + 7.
0 – 10 + 18 20 + 150 – 65 to + 150 Unit Vdc Vdc Vdc m...


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