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M54679SP

Hitachi
Part Number M54679SP
Manufacturer Hitachi
Description 2-Phase Stepper Motor Driver
Published Apr 23, 2005
Detailed Description M54679SP 2-Phase Stepper Motor Driver REJ03F0052-0100Z Rev.1.0 Sep.17.2003 Description The M54679SP is a semiconductor ...
Datasheet PDF File M54679SP PDF File

M54679SP
M54679SP

Overview
M54679SP 2-Phase Stepper Motor Driver REJ03F0052-0100Z Rev.
1.
0 Sep.
17.
2003 Description The M54679SP is a semiconductor integrated circuit that can drive the bipolar stepping motor directly by controlling the coil-current at low level.
Features • Wide supply voltage sphere (10 to 35 V) • Bipolar, constant current PWM function.
(Topside transistors PWM function, maximum current is 0.
8 Amps.
) • Few external components.
(This IC can be operated with 1 capacitor and 2 resistances.
) • 4 phases input style (include the protection function of output through current).
• Output current charge function (2 bits, 4 type currents).
• Thermal protection circuit.
• Include flywheel diodes.
Application • Printer, PPC and Facsimile.
Function The M54679SP is a semiconductor integrated circuit, which can drive to phase stepper motor.
It can control the direction of motor current and output motor current (4 steps) by I0, I1 terminals.
Also, it can drive the two-phase bipolar stepper motor by one IC as it includes two current control circuits.
Block Diagram Out1B Vm1 Out1A Ph1A Out2A Vm2 Out2B Ph2A Ph1B Source PWM Source PWM Ph2B P.
GND P.
GND Vcc Regout (3.
5V) 18K 1.
25V Spike current cancel Current comp1 R S Q FF1 Q R FF2 S Spike current cancel Current comp2 10K Vref I0(1) I1(1) TSD Standby Frequency Generator VTM VTH VTL I0(2) I1(2) Rs1 S1 Stby P.
GND Fref GND S2 Rs2 Rev.
1.
0, Sep.
17.
2003, page 1 of 11 M54679SP Pin Configuration (Top View) I1(2) I0(2) Regout Fref Ph2B Ph2A NC GND Vm2 S2 Rs2 Out2B Out2A N.
C 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 Vm1 S1 Rs1 Out1B Out1A P.
GND GND I1(1) I0(1) Vref Stby Ph1B Ph1A Vcc 32 Shrink-DIP (32P4B) Pin Functions Symbol Vm1, Vm2 Out1A, Out1B, Out2A, Out2B, Rs1, Rs2 Vcc Ph1A, Ph1B, Ph2A, Ph2B I0(1), I1(1), I0(2), I1(2), Stby S1, S2 Vref Regout Fref P.
GND Terminal Motor supply voltage Output terminals Current sensor Power supply Phase input Output current change Standby inpu...


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