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STK672-080-E Datasheet PDF - SANYO -> Panasonic

Part NameDescriptionManufacturer
STK672-080-E Stepping Motor Driver (sine wave drive) Output Current 2.8A (no heat sink*) SANYO
SANYO -> Panasonic SANYO
STK672-080-E Datasheet PDF : STK672-080-E pdf   
STK672-080-E image

Overview
The STK672-080-E is a stepping motor driver hybrid IC that uses power MOSFETs in the output stage. It includes a built in microstepping controller and is based on a unipolar constant-current PWM system. The STK672-080-E supports application simplification and standardization by providing a built-in 4 phase distribution stepping motor controller. It supports five excitation methods: 2 phase, 1-2 phase, W1-2 phase, 2W1-2 phase, and 4W1-2 phase excitations, and can
provide control of the basic stepping angle of the stepping motor divided into 1/16 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. This product is provided in a smaller package than SANYO's earlier STK672-050-E for easier mounting in end products.

Features
•Can implement stepping motor drive systems simply by providing a DC power supply and a clock pulse generator.
•One of five drive types can be selected with the drive mode settings (M1, M2, and M3)
1) 2 phase excitation drive
2) 1-2 phase excitation drive
3) W1-2 phase excitation drive
4) 2W1-2 phase excitation drive
5) 4W1-2 phase excitation drive
•Phase retention even if excitation is switched.
•Provides the MOI phase origin monitor pin.
•The CLK input counter block can be selected to be one ofthe following by the high/low setting of the M3 input pin.
1) Rising edge only
2) Both rising and falling edges
•The CLK input pin includes built-in malfunction prevention circuits for external pulse noise.
•ENABLE and RESET pins provided. These are Schmitt trigger inputs with built-in 20kΩ(typical) pull-up resistors.
•No noise generation due to the difference between the A and B phase time constants during motor hold since external excitation is used.
•Microstepping operation supported even for small motor currents, since the reference voltage Vref can be set to any value between 0V and 1/2VCC2.

•External excitation PWM drive allows a wide operating supply voltage range (VCC1 = 10 to 45V) to be used.
•Current detection resistor (0.15Ω) built-in the hybrid IC itself.
•Power MOSFETs adopted for low drive loss.
•Provides a motor output drive current of IOH= 2.8A. (at Tc = 105°C)

Applications
•Facsimile stepping motor drive (send and receive)
•Paper feed and optical system stepping motor drive in copiers
•Laser printer drum drive
•Printer carriage stepping motor drive
•X-Y plotter pen drive
•Other stepping motor applications

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