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STK673-011-E Datasheet(PDF) 1 Page - ON Semiconductor |
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STK673-011-E Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 15 page 62911HKPC 5-7063/42011HKIM/71608HKIM No.A1137-1/15 http://onsemi.com Semiconductor Components Industries, LLC, 2013 June, 2013 STK673-011-E 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 driver circuit. The number of motor revolution can be controlled by the frequency of external clock input. 2, 2-3, W2-3 and 2W2-3- phase excitation modes are available. The basic step angle of the stepping motor can be separated as much as one-eighth 2-3-phase to 2W2-3-phase excitation mode control quasi-sine wave current, thereby realizing low vibration and low noise. 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. • Industrial machines or products employing 3-phase stepping motor driving. Features • Number of motor revolution can be controlled by the frequency of external clock input. • 4 types of modes, i.e., 2, 2-3, W2-3 and 2W2-3-phase excitations, are available which can be selected based on rising of clock signals, by switching highs and lows of Mode A and Mode B terminals. • Setting a Mode C terminal low allows an excitation mode that is based on rising and falling of a clock signal. By setting the Mode C terminal low, phases that are set only by Mode A and Mode B can be changed to other phases as follows without changing the number of motor revolution: 2-phase may be switched to 2-3-phase; 2-3-phase may be switched to W2-3-phase; and W2-3-phase may be switched to 2W2-3-phase. • 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. • Supply voltage: VCC1 = 16 to 30V, VCC2 = 5.0V ±5% • A built-in current detection resistor (0.227Ω) • A motor current during revolution can deal with as high as 2.4A at Tc = 105°C and as high as 4A at Tc = 50°C or lower. Ordering number : ENA1137B Thick-Film Hybrid IC 3-Phase Stepping Motor Driver |
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