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MC3479 Dataheets PDF



Part Number MC3479
Manufacturers Motorola
Logo Motorola
Description STEPPER MOTOR DRIVER
Datasheet MC3479 DatasheetMC3479 Datasheet (PDF)

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 .

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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 mA Vdc mA Vdc mA °C °C RECOMMENDED OPERATING CONDITIONS Characteristic Supply Voltage Clamp Diode Cathode Voltage Driver Output Current (Per Coil) (Note 1) Input Voltage (Logic Controls) Bias/Set Current (Outputs Active) Phase A Output Voltage Phase A Sink Current Operating Ambient Temperature NOTE: 1. See section on Power Dissipation in Application Information. Symbol VM VD IOD Vin IBS VOA IOA TA Min + 7.2 VM — 0 – 300 — 0 0 Max + 16.5 VM + 4.5 350 + 5.5 – 75 VM 8.0 + 70 Unit Vdc Vdc mA Vdc µA Vdc mA °C DC ELECTRICAL CHARACTERISTICS (Specifications apply over the recommended supply voltage and temperature range, [Notes 2, 3] unless otherwise noted.) Characteristic INPUT LOGIC LEVELS Threshold Voltage (Low–to–High) Threshold Voltage (High–to–Low) Hysteresis Current: (VI = 0.4 V) Current: (VI = 5.5 V) Current: (VI = 2.7 V) DRIVER OUTPUT LEVELS Output High Voltage (IBS = – 300 µA): (IOD = – 350 mA) (IBS = – 300 µA): (IOD = – 0.1 mA) Output Low Voltage (IBS = – 300 µA, IOD = 350 mA) Differential Mode Output Voltage Difference (Note 4) (IBS = – 300 µA, IOD = 350 mA) Common Mode Output Voltage Difference (Note 5) (IBS = – 300 µA, IOD = – 0.1 mA) Output Leakage, Hi Z State (0 VOD VM, IBS = – 5.0 µA) (0 VOD VM, IBS = – 300 µA, F/H = 2.0 V, OIC = 0.8 V) 2, 3, 14, 15 VOHD VM – 2.0 VM – 1.2 VOLD DVOD CVOD — — — — — — — — — — 0.8 0.15 0.15 Vdc Vdc Vdc µA IOZ1 IOZ2 – 100 – 100 — — + 100 + 100 Vdc 7, 8, 9, 10 9 VTLH VTHL VHYS IIL — 0.8 0.4 – 100 — — — — — — — — 2.0 — — — + 100 + 20 Vdc Vdc Vdc µA Pins Symbol Min Typ Max Unit p p p p NOTES: 2. Algebraic convention rather than absolute values is used to designate limit values. 3. Current into a pin is designated as positive. Current out of a pin is designated as negative. 4. DVOD = VOD1,2 – VOD3,4 where: VOD1,2 = (VOHD1 – VOLD2) or (VOHD2 – VOLD1), and VOD3,4 = (VOHD3 – VOLD4) or (VOHD4 – VOLD3). 5. CVOD = VOHD1 – VOHD2 or VOHD3 – VOHD4. 2 MOTOROLA ANALOG IC DEVICE DATA MC3479 DC ELECTRICAL CHARACTERISTICS (Specifications apply over the recommended supply voltage and temperature range, [Notes 2, 3] unless otherwise noted.) Characteristic CLAMP DIODES Forward Voltage (ID = 350 mA) Leakage Current (Per Diode) (Pin 1 = 21 V; Outputs = 0 V; IBS = 0 µA) PHASE A OUTPUT Output Low Voltage (IOA = 8.0 mA) Off State Leakage Current (VOHA = 16.5 V) POWER SUPPLY Power Supply Current (IOD = 0 µA, IBS = – 300 µA) (L1 = VOHD, L2 = VOLD, L3 = VOHD, L4 = VOLD) (L1 = VOHD, L2 = VOLD, L3 = Hi Z, L4 = Hi Z) (L1 = VOHD, L2 = VOLD, L3 = VOHD, L4 = VOHD) BIAS/SET CURRENT To Set Phase A 6 IBS – 5.0 — — µA 16 IMW IMZ IMN — — — — — — 70 40 75 mA 11 VOLA IOHA — — — — 0.4 100 Vdc µA 1, 2, 3, 14, 15 VDF IDR — — 2.5 — 3.0 100 Vdc µA Pins Symbol Min Typ Max Unit PACKAGE THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction–to–Ambient (No Heatsink) Symbol R θJA Min — Typ 45 Max — Unit °C/W AC SWITCHING CHARACTERISTICS (TA = + 25°C, VM = 12 V) (See Figures 2, 3, 4) Characteristic Clock Frequency Clock Pulse Wid.


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