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| SHINDENGEN Stepping Motor Driver ICs MTD Series MTD1120F FEATURES Constant-current chopping function OUTLINE DIMENSIONS Case : HSOP-28 (Unit : mm) (Off time fixed, self-oscillation) 4-phase input (with inhibit for simultaneously turn ON) 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 VCEO(SUS) IO VCC VIN PT Tj Tstg Symbol VCE(sat) ICER ICC VINH VINL lINH lINL Iref Isense VS(max.) Test Conditions Io=0.9A VCER=80V VCC = 5V VCC = 5V VCC = 5V VCC = 5V,VIN=5V VCC = 5V,VIN=0V VCC = 5V,Vref=0V VCC=5V,VS=0V VCC=5V Ratings 80 1.2 07 0VCC 3 150 -40150 min. typ. 1.1 30 2.7 GND -10 -1 -1 Unit V A V V W max. 1.4 10 70 Vcc 1.0 10 -50 -50 -50 1.0 Electrical Characteristics (Ta=25) Item Output Saturation Voltage Output Leakage Current Logic Supply Current Input High Voltage Input Low Voltage Logic High Input Current Logic Low Input Current Reference Input Current Input Current(Current Sensor) Maximum Sensing Voltage Unit V A mA V V A A A A V Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd Stepping Motor Driver ICs Equivalent CircuitBasic Application Circuit MTD1120F Pin Assignment True Table IN A or B L L H H IN A or B L H L H Out A or B OFF OFF ON OFF Out A or B OFF ON OFF OFF Recommended Parts Value Symbol Rs RF CF Rt Ct Vz R1+R2 Recommended Value 0.68 1 3300 8.2 3300 Vmmx1.21.5 <10 Unit k pF k pF V k Setting of Output Current and Fixed Off Time Fig.1 shows constant current chopping wave form. Output Current setting Fig.1 Constant current wave form (Motor current) Io = R2 Vcc R1+R2 Rs Fixed Off Time Setting Toff=0.69CtRt Recommended Operating Conditions Ta=25 Item Symbol Motor Supply Voltage Vmm Output Voltage VOUT Output Current IO Output Emitter Voltage VE Logic Supply Voltage VCC Chopping Frequency fchop Operating Temperature Top min. typ. max. 32 70 0.5 1.0 5.25 27 120 4.75 20 -25 Unit V V A V V kHz Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd |
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