MTD2009J

Features 2 Dual Stepper Motor Driver Constant Current Control Function (Fixed Off Time) Current Decay Mode (Fast Decay or Slow Decay) Noise Cancellation Function Cross Conduction Protection Thermal Shutdown Function Built-in Flywheel and Flyback Diodes Absolute Maximum Ratings Ta=25 Parameter Logic Supply Voltage Logic Input Voltage Load Supply Voltage Output Current Flywheel Diode Current Power Dissipation Storage Temperature Junction Temperature Symbol VCC VLOGIC Vmm IOUT If PD Tstg Tj -40 0 0 Rating 6 VCC 35 1.2 1.2 2.9 150 150 V V V A A W Ta=25 unless otherwise specified Unit Electrical Characteristics Ta=25 Parameter Symbol Condition , Vcc=5V min. Ta=25 , Vcc=5V unless otherwise specified typ. max. Unit Output stage Vmm 1 A+B or C+D Load Supply Current 1 Axis A+B or C+D Vmm 2 A+B+C+D Load Supply Current 2 Axis A+B+C+D Output Saturation Voltage Upper side Output Saturation Voltage Lower side Output Leakage Current Diode Forward Drop Upper side Diode Forward Drop Lower side Imm (OFF)1 Imm (OFF)2 VCE VCE SAT Vmm=24V, VENA=2.1V, No load Vmm=24V, VENA=2.1V, No load IC=0.8A IC=0.8A Vmm=35V If=0.8A If=0.8A - 1.2 0.7 1.3 1.3 7 14 1.5 1.0 20 1.6 1.5 mA mA V V A V V H L SAT Ir VFH VFL Logic stage VCC VCC1+VCC2 Logic Supply Current VCC1+VCC2 VCC VCC1+VCC2 Logic Supply Current VCC1+VCC2 PHA/ENA/DEC H PHA/ENA/DEC H Input Voltage PHA/ENA/DEC L PHA/ENA/DEC L Input Voltage PHA/ENA/DEC H PHA/ENA/DEC H Input Current PHA/ENA/DEC L PHA/ENA/DEC L Input Current CR CR Charge Current Vref Vref Input Current Vref Vref Input Current Blanking Time Thermal Shutdown Temperature ICC (ON) ICC (OFF) VLOGICH VLOGICL ILOGICH ILOGICL ICR Vref Iref tb TTSD Vref=0V Rt=30k , Ct=1000pF VLOGIC= VLOGIC= VCR=2V H L VENA= VENA= L H 2.1 GND 95 36 -100 1 -1 2.14 150 135 52 VCC 0.8 20 -200 1.0 -10 mA mA V V A A mA V A s U170-1 www.shindengen.co.jp/product/semi/ Typical Application OUT B* Rs B OUT B Vmm B Vref B PHA B ENA B DEC B CR B Vcc ¾ Pin Assignment OUT A* Rs A OUT A Vmm A Vref A PHA A ENA A DEC A CR A NC Top View MTD2009J Vcc CR C DEC C ENA C PHA C Vref C Vmm C OUT C Rs C OUT C* NC CR D DEC D ENA D PHA D Vref D Vmm D OUT D Rs D OUT D* Package HSOP40 Recommended External Components Value Symbol Rs Rt Ct R1+R2 Recommendation 0.68 30 1000 10 k pF k Unit Truth Table ENA A or B or C or D PHA A or B or C or D OUT A or B or C or D OUT A*or B*or C* or D* L L H : don't care DECAY L H Decay Mode Fast Slow Switching Transistor Both source and sink transistor Only source transistor L H L H OFF H L OFF Setting of Output Current, One Shot Off Time and Blanking Time Output Current Setting lchop  Vref 0.012 A   Rs One Shot Off Time Setting toff = 1.163 × Ct × Rt Blanking Time Setting Rt ⎛ 1 – ------------ ⎞ ⎜ 1000⎟ tb  Ct × Rt × In ⎜ ----------------------⎟ Rt ⎜ 3 – ------------ ⎟ ⎝ 1000⎠ Ichop Constant current waveform Motor current Recommended Operating Conditions Ta=25 Parameter Junction Temperature Logic Supply Voltage Load Supply Voltage Symbol Tj VCC Vmm Ta=25 unless otherwise specified Unit Recommendation -25 4.75 5 120 5.25 31 V V www.shindengen.co.jp/product/semi/ U170-1