STK673-011-E Overview
ENA1137B STK673-011-E Thick-Film Hybrid IC 3-Phase Stepping Motor Driver http://onsemi. Overview The STK673-011-E is a 3-phase stepping motor driver hybrid IC with built-in microstep controller having a bipolar constant current PWM system, in which a power MOSFET is employed at an output stage. It includes a 3-phase distributed controller for a 3-phase stepping motor to realize a simple configuration of the motor...
STK673-011-E Key Features
- Number of motor revolution can be controlled by the frequency of external clock input
- Setting a Mode C terminal low allows an excitation mode that is based on rising and falling of a clock signal
- Phase is maintained even when the excitation mode is changed
- An MOI output terminal which outputs 1 pulse per 1 cycle of phase current
- A CW/CCW terminal which switches the rotational direction
- A Hold terminal which temporarily holds the motor in a state where the phase current is conducted
- An Enable terminal which can forcibly turns OFF a MOSFET of a 6 output driving element in normal operation
- Schmitt inputs with built-in pull-up resistor (20kΩ typ)
- Motor current can be set by changing the voltage of the Vref terminal (0.63V per 1A, dealing as much as 0 to 1/2VCC2 (4A
- The clock input for controlling the number of motor revolution lies in a range of 0 to 50kHz
STK673-011-E Applications
- As a 3-phase stepping motor driver for transmission and reception in a facsimile
- As a 3-phase stepping motor driver for feeding paper feed or for an optical system in a copying machine