STK672-640CN-E

Ordering number : ENA2317 STK672-640CN-E Thick-Film Hybrid IC 2-phase Stepper Motor Driver http://onsemi.com Overview The STK672-640CN-E is a hybrid IC for use as a unipolar, 2-phase stepper motor driver with PWM current control. Applications  Office photocopiers, printers, etc. Features  Built-in motor terminal open detection function(output current OFF). There is a terminal to coordinate motor terminal open detection current.   Built-in overcurrent detection function, overheat detection function (output current OFF).  FAULT1 signal (active low) is output when any of motor terminal open, overcurrent or overheat is detected. The FAULT2 signal is used to output the result of activation of protection circuit detection at 3 levels.  Built-in power on reset function.  The motor speed is controlled by the frequency of an external clock signal.  2 phase or 1-2 phase excitation switching function.  Using either or both edges of the clock signal switching function. Phase is maintained even when the excitation mode is switched.  Rotational direction switching function.  Supports schmitt input for 2.5V high level input.  Incorporating a current detection resistor (0.089Ω: resistor tolerance 2%), motor current can be set using two external resistors.  The ENABLE pin can be used to cut output current while maintaining the excitation mode.  With a wide current setting range, power consumption can be reduced during standby.  No motor sound is generated during hold mod...