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SMA7022MU

2-phase stepper motor unipolar IC, self excitation PWM current control with fixed off time. The built-in current sense resistor allows reduction in external components compared to the existing product. Also includes protection circuits which operate during abnormal motor operation (i.e. coil open/shorts) (Please refer to the application note for details.) Line up with different current outputs and sequencers are also available.

Design Support

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Features

    ・Power supply voltages: VBB=10V to 44V
    ・Output current: IO=1.0A(max)
    ・Self-excitation PWM current control
    ・Off-time adjustable by external components
    ・2-phase excitation

Application

    ・Copying machines
    ・Printers
    ・Manufacturing equipment

Specifications

Excitation Method 2 phase
Maximum Supply Voltage 44.00 V
Output Current 1.0 A
On-Resistance 0.70 Ω
Input Method Phase in
OCP NO
TSD NO
Simultaneous ON Protection Feature YES
Open Coil

Block Diagram

Block Diagram

Questions or Comments?

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