Ordering number : ENN6507A

52004TN (OT) / 22002TN (OT) No. 6507-1/17

Overview

The STK672-080 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

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.

Compared to the earlier SANYO STK672-050, the

STK672-080 features a significantly smaller package 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

Features

• Can implement stepping motor drive systems simply by

providing a DC power supply and a clock pulse

generator.

<Control Block Features>

• One of five drive types can be selected with the drive

mode settings (M1, M2, and M3)

—2 phase excitation drive

—1-2 phase excitation drive

—W1-2 phase excitation drive

—2W1-2 phase excitation drive

—4W1-2 phase excitation drive

• Phase retention even if excitation is switched.

• The MOI phase origin monitor pin is provided.

• The CLK input counter block can be selected to be one of

the following by the high/low setting of the M3 input pin.

—Rising edge only

—Both rising and falling edges

excitation mode.

Continued on next page.

Package Dimensions

unit: mm

4186

1

15

46.6

41.2

(6.6)

14

×2.0=28

3.6

0.5

2.0

8.5

0.4

2.9

[STK672-080]

STK672-080

SANYO Electric Co.,Ltd. Semiconductor Company

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Stepping Motor Driver (Sine Wave Drive) Output Current: 2.8 A (No Heat Sink*)

Unipolar constant-current chopper (external excitation PWM) circuit with built-in microstepping controller

Thick-Film Hybrid IC

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.