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| SHINDENGEN Stepping Motor Driver ICs MTD Series MTD2005F FEATURES chopping function (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 Constant-current OUTLINE DIMENSIONS Case : HSOP-28 (Unit : mm) 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 Symbol Test Conditions V CE (sat)H Io=0.8A V CE (sat)L Io=0.8A Ir H Vmm=60V,Vout=0V I rL Vout=60V,V RS=0V I CC (OFF) Vcc=5V,V ENA="H" I CC (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 V ENAL V CC =5V I ENAH V CC =5V,V ENA=5V I ENAL V CC =5V,V ENA=0V V DECH V CC =5V V DECL V CC =5V I DECH V CC =5V,V DEC =5V I DECL V CC =5V,V DEC =0V Iref V CC =5V,Vref=0V Isense V CC =5V,V S=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 Ratings 60 1.0 06 0V CC 3 150 -40150 min. typ. 1.0 1.0 Unit V A V V W max. 1.4 1.4 10 10 19 25 26 33 Vcc 0.8 10 -150 Vcc 0.8 10 -100 -150 Vcc 0.8 10 -200 -1 -1 1.35 10 2 140 -300 -10 -10 1.0 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 2.7 GND -100 2.7 GND 2.7 GND 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 MTD2005F 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. Output Current setting Fig.1 Constant current wave form (Motor current / phase) 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 0.8 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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