SHINDENGEN Stepping Motor Driver ICs MTD Series OUTLINE DIMENSIONS MTD2005 Case : ZIP-27 (Unit : mm) FEATURES ●Constant-current 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 RATINGS ●Absolute Maximum Ratings (Ta=25℃) Item Symbol V CEO(SUS) IO V CC V IN PT Tj Tstg Output Voltage Output Current Logic Supply Voltage Logic Input Voltage Total Power Dissipation Junction Temperature Storage Temperature ●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 Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Ratings 60 1.3 0～6 0～V CC 5 150 -40～150 min. Unit V A V V W ℃ ℃ typ. max. 1.0 1.4 1.0 1.4 10 10 19 26 25 33 Vcc 0.8 10 -150 2.7 GND -100 2.7 Vcc GND 0.8 10 -100 -150 2.7 Vcc GND 0.8 10 -200 -1 -1 -300 -10 -10 1.0 1.35 10 2 140 Unit V V μA μA mA mA V V μA μA V V μA μA V V μA μA μA μA V μs μA mA ℃ Stepping Motor Driver ICs MTD2005 ● Equivalent Circuit・Basic Application Circuit ●Pin Assignment ●True Table ENA A or B L L H ENA A or B L H × Out 1 or 4 L H OFF ●Recommended Parts Value Out 2 or 3 H L OFF Symbol Rs Rt Ct R1+R2 × : don't care Recommended Value 0.68 13 4700 <10 Unit Ω kΩ pF kΩ ●True Table for Current Decay DECAY Current Decay Mode L H 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 ○Chopping Frequency Setting f = 1 0.72・Ct・Rt ●Recommended Operating Conditions （Ta=25℃） Item Motor Supply Voltage Output Current Output Emitter Voltage Logic Supply Voltage Chopping Frequency Operating Temperature Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Symbol Vmm Io min. typ. VE Vcc fchop Top 4.75 max. 50 1 1 5.25 20 -25 120 Unit V A V V kHz ℃