2-Phase Stepping Motor Driver 19-Pin ZIP

The STK672-632A-E is a hybrid IC for use a unipolar, 2-phase stepping motor driver with PWM current control. It includes a built-in stepping controller and is based on a unipolar constant-current PWM system. The STK672-632A-E supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor controller. It supports five excitation methods: 2 phase and 1-2 phase excitations, and can provide control of the basic stepping angle of the stepping motor divided into 1/2 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 STK672-632A-E has various protective functions against over-current and over-heat. And it is pin-compatible and small sized version of TK672-630A-E.

• The motor speed can be controlled by the frequency of an external clock signal
• Protective function against over-current and over-heat is built in
• Current detection resistors is built in