General Description
BD63730EFV is a low-power motor driver that drives load by PWM current. Rated power supply voltage of the device is 36V, and rated output current is 3.0A. The input interface are interchangeable between CLK-IN drive mode and the PARALLEL-IN drive mode, and excitation mode is corresponding to FULL STEP, HALF STEP (2 types), and QUARTER STEP modes via a built-in DAC. In terms of current decay, the FAST DECAY/SLOW DECAY ratio may be set without any limitation, and all available modes may be controlled in the most appropriate way. In addition, the power supply may be driven by one single system, which simplifies the design.

FEATUREs
■ Rated output current of 3.0A DC
■ Low ON-Resistance DMOS output
■ CLK-IN drive mode
■ PARALLEL-IN drive mode
■ PWM constant current control (other oscillation)
■ Built-in spike noise cancel function (external noise
   filter is unnecessary)
■ Full-step, half-step (two types), and quarter-step
   functionality
■ Dynamic excitation mode switch
■ Current decay mode switch (linearly variable
   FAST/SLOW DECAY ratio)
■ Normal rotation & reverse rotation switching
   function
■ Power save function
■ Built-in logic input pull-down resistor
■ Power-ON reset function
■ Thermal shutdown circuit (TSD)
■ Over-current protection circuit (OCP)
■ Under voltage lock out circuit (UVLO)
■ Over voltage lock out circuit (OVLO)
■ Ghost Supply Prevention (protects against
   malfunction when power supply is disconnected)
■ Electrostatic discharge: 4kV (HBM specification)
■ Adjacent pins short protection
■ Micro miniature, ultra-thin and high heat-radiation
   (exposed metal type) package

APPLICATION
■ PPC, multi-function printer, laser beam printer, and
   ink-jet printer
■ Monitoring camera and WEB camera
■ Sewing machine
■ Photo printer, FAX, scanner and mini printer
■ Toy and robot