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For complete documentation, see the data sheet.

Printed On: 7/11/2015

STK672-442AN-E: Unipolar 2-phase Stepper Motor Driver

Product Description
The STK672-442AN-E is a hybrid IC for use a unipolar, 2-phase stepper motor driver with PWM current control. It includes a built-in microstepping controller and is based on a unipolar constant-current PWM system. The STK672-442AN-E supports application simplification and standardization by providing a built-in 4 phase distribution stepper motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can provide control of the basic stepping angle of the stepper motor divided into 1/16 step units. It also allows the motor speed to be controlled with only a clock signal. The use of this hybrid IC allows designers to implement systems that provide high motor torques, low vibration levels, low noise, fast response, and high-efficiency drive. In addition the STK672-442AN-E has various protective function against over-current and over-heat. And STK672-440AN-E with hole to attach a heat-sink is lined up.
Features   Benefits
     
  • Micro stepping controller built in
 
  • Easy to switch between full step, half step, 1/4 step, 1/8 step and 1/16 step with prevention of jumping phase
  • Protective function against over-current and over-heat built in
 
  • Superior in safety drive
  • Current detection resistors built in
 
  • Easy to design and reduce the mounting area
Applications   End Products
  • Computing & Peripherals
  • Industrial
 
  • Multi-Function Printer
  • Document Scanner
  • Security Camera
  • Vending Machine
Selected Electrical Specifications

Product Compliance Status Description Type VM Min (V) VM Max (V) VCC Min (V) VCC Max (V) IO Max (A) IO Peak Max (A) Step Resolution Control Type Feedback Method Current Sense Regulator Output Fault Detection Flyback Protection RDS(on) Typ (Ω) Package Type
 Pb-free   Active     Unipolar 2-phase Stepper Motor Driver   Stepper   20   52   4.75   5.25   3.5   20   1/16   Clock   None   Fully Integrated   No   Thermal       SIP-19 
Package Availability
Type
PB free
Standard
SIP-19 x