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M54678FP Datasheet(PDF) 1 Page - Mitsubishi Electric Semiconductor |
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M54678FP Datasheet(HTML) 1 Page - Mitsubishi Electric Semiconductor |
1 / 5 page 2-PHASE STEPPER MOTOR DRIVER M54678FP MITSUBISHI <CONTROL / DRIVER IC> PIN CONFIGURATION (TOP VIEW) DESCRIPTION The M54678FP is a semiconductor integrated circuit designed for stepper motor driver used to printer, PPC and facsimile. FEATURES q Wide supply voltage range (10 – 35V) q Output current is controlled by PWM operation q Few external components (This IC can be operated with 1 capacitor and 2 resistances) q Voltage stabilizer circuit (Regout = 3.5V) q Thermal protection circuit q Flywheel diode APPLICATION Printers, PPC, facsimile FUNCTION The M54678FP is a integrated circuit which can drive two phase stepper motor. The output current direction is determined by phase terminal function, and the output current level is controlled by Vref terminals voltage. BLOCK DIAGRAM Outline 36P2R-D Delay Delay Vm Ph1 En1 Delay Delay Ph2 En2 Vref1 S1 Fref Vref2 S2 VTM Rs1 Rs2 Out1 Out1B Out2 Out2B VCC VTL VTH Regout Regulator(3.5V) 1.25V 10K 18K Frequency Generator Spike current cancel Q R S FF1 Current comp1 Current comp2 GND Source PWM Source PWM P.GND P.GND Spike current cancel QR S FF2 36 33 34 35 1 4 3 2 32 5 31 6 28 9 27 10 26 11 25 12 13 14 24 23 7 8 30 29 15 22 16 21 17 20 18 19 N.C Out2 Out2B Rs2 S2 Vm N.C N.C Ph2 En2 Vref2 Fref P.GND Out1 Out1B Rs1 S1 Vm N.C VCC Ph1 En1 Vref1 Regout GND GND N.C: no connection |
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