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| SHINDENGEN Stepping Motor Driver ICs MTD Series MTD2005 FEATURES Constant-current chopping function OUTLINE DIMENSIONS Case : ZIP-27 (Unit : mm) (Frequency fixed, separate-oscillation) 2-phase input (ENA input is useful for half step drive) Selectable slow/fast current decay for improved micro stepping A noise cancel function is provided (No externally attached filter needed) Protection for penetration current Built-in thermal alarm Built-in flywheel diodes RATINGS Absolute Maximum Ratings (Ta=25) Item Output Voltage Output Current LogicSupplyVoltage LogicInputVoltage Total Power Dissipation Junction Temperature Storage Temperature Symbol V CEO(SUS) IO V CC V IN PT Tj Tstg Ratings 60 1.3 06 0V CC 5 150 -40150 min. typ. 1.0 1.0 Unit V A V V W Electrical Characteristics (Ta=25) Item Output Saturation Voltage(Upper side) Output Saturation Voltage(Lower side) Output Leakage Current(Upper side) Output Leakage Current(Lower side) Logic Supply Current(Standby) Logic Supply Current(All Circuit ON) Phase"H"Input Voltage Phase"L"Input Voltage Phase"H"Input Current Phase"L"Input Current Enable"H"Input Voltage Enable"L"Input Voltage Enable"H"Input Current Enable"L"Input Current DECAY"H"Input Voltage DECAY"L"Input Voltage DECAY"H"Input Current DECAY"L"Input Current Reference Input Current Input Current(Current Sensor) Maximum Sensing Voltage Pulse Blanking Time Thermal Alarm Cutoff Current Thermal Alarm Output Current Thermal Alarm Temperature Symbol Test Conditions V CE(sat)H Io=0.8A V CE(sat)L Io=0.8A IrH Vmm=60V,Vout=0V Vout=60V,V RS=0V IrL ICC (OFF) Vcc=5V,V ENA="H" ICC (ON) Vcc=5V,V ENA="L" VphaH V CC = 5V VphaL V CC = 5V IphaH V CC = 5V,Vpha=5V IphaL V CC = 5V,Vpha=0V V ENAH V CC=5V VENAL V CC=5V IENAH V CC=5V,VENA=5V IENAL V CC=5V,VENA=0V V DECH V CC=5V V DECL V CC=5V IDECH V CC=5V,VDEC =5V IDECL V CC=5V,VDEC =0V Iref V CC =5V,Vref=0V Isense V CC=5V,VS=0V V S(max.) V CC=5V tb V CC =5V,Ct=3300pF Iralm V CC=5V,Valm=5V Ialm V CC=5V,Valm=0.5V Talm max. 1.4 1.4 10 10 19 25 2.7 GND -100 2.7 GND -100 2.7 GND -200 -1 -1 1.35 26 33 Vcc 0.8 10 -150 Vcc 0.8 10 -150 Vcc 0.8 10 -300 -10 -10 1.0 10 2 140 Unit V V A A mA mA V V A A V V A A V V A A A A V s A mA Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Stepping Motor Driver ICs Equivalent CircuitBasic Application Circuit MTD2005 Pin Assignment True Table ENA A or B L L H ENA A or B L H x Out 1 or 4 L H OFF Out 2 or 3 H L OFF Recommended Parts Value Symbol Rs Rt Ct R1+R2 Recommended Value 0.68 13 4700 <10 Unit k pF k x : don't care True Table for Current Decay DECAY L H Current Decay Mode FAST (Sink+Source Chopping) SLOW (Source Chopping) Setting of Output Current and Chopping Frequency Fig.1 shows constant current chopping wave form. Fig.1 Constant current wave form (Motor current / phase) Output Current setting Io = R2 Vcc R1+R2 Rs 1 0.72CtRt Chopping Frequency Setting f= Recommended Operating Conditions Ta=25 Item Motor Supply Voltage Output Current Output Emitter Voltage Logic Supply Voltage Chopping Frequency Operating Temperature Symbol Vmm Io min. typ. max. 50 1 1 5.25 120 Unit V A VE Vcc fchop Top 4.75 20 -25 V V kHz Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd |
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