STK672-520

Ordering number : ENA1179 STK672-520 Thick-Film Hybrid IC 2-phase Stepping Motor Driver http://onsemi.com Overview The STK672-520 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 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 (0.33Ω: resistor tolerance ±2%), motor current can be set using two external resistors. Equipped with an ENABLE pin that, during clock input, allows motor output to be cut-off and resumed later while maintaining the same excitation timing. Semiconductor Components Industries, LLC, 2013 June, 2013 82912HKPC 018-08-0039 No. A1179-1/23 STK672-520 Specifications Absolute Maximum Ratings at Tc = 25°C Parameter Maximum supply voltage 1 Maximum supply voltage 2 Input voltage Output current 1 Output current 2 Allowable power dissipation Operating substrate temperature Junction temperature Storage temperature Symbol VCC max VDD max VIN max IOP max IOH max Pd max Tc max Tj max Ts...