STK672-540 - ON Semiconductor

STK672-540 Two-Phase Stepping Motor Driver

Ordering number : ENA0754A STK672-540 Thick-Film Hybrid IC 2-phase Stepping Motor Driver http://onsemi.com Overview The STK672-540 is a hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control. Applications • Office photocopiers, printers, etc. Features • The motor speed can be controlled by the frequency of an external cloc.

Features

• The motor speed can be controlled by the frequency of an external clock signal.
• 2-phase excitation or 1-2 phase excitation is selected according to switching the state of the MODE pin (low or high).
• The phase is maintained even if the excitation mode is switched in the middle of operation.
• The direction of rotation can be changed by applying a high or low signal to the CWB pin used to select the direction of rotation.
• Supports schmitt input for 2.5V high level input.
• Incorporating a current detection resistor (0.11Ω: resistor tolerance ±2%), motor current can be set using two exter.