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STK673-010-E 데이터시트

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STK673-010-E Thick-Film Hybrid IC Bipolar Fixed-Current Chopper (external excitation PWM) Built-in Microstepping Control 3-Phase Stepping Motor Driver(sine wave drive) Output Current 2.4A SANYO
SANYO -> Panasonic SANYO
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Overview
The STK673-010-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 powerMOSFET 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.

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 (20kΩtyp)
•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.

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.

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