SKT672-070-E Datasheet, PDF (1/18 Pages) ON Semiconductor – Stepping Motor Driver

Ordering number : EN7307B
STK672-070-E
Thick-Film Hybrid IC
Unipolar Constant-current Chopper (external excitation
PWM) Circuit with Built-in Microstepping Controller
Stepping Motor Driver (sine wave drive)
Output Current 1.5A (no heat sink*)
http://onsemi.com
Overview
The STK672-070-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 STK672-070-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 earlier STK672-040-E for easier mounting in end products.
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
Note*: Conditions: VCC1 = 24V, IOH = 1.5A, 2W1-2 excitation mode.
Semiconductor Components Industries, LLC, 2013
June, 2013
61108HKIM/D1803SI(OT) No.7307-1/18