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STK672-010

Unipolar Fixed-Current Chopper (separate excitation) Type 1.7 A Output Current Stepping Motor Driver with Built-in 4-Phase Distribution Controller

SANYO -> Panasonic 

Ordering number : EN4927

Thick-Film Hybrid IC

STK672-010

Unipolar Fixed-Current Chopper (separate excitation)

Type 1.7 A Output Current Stepping Motor Driver

with Built-in 4-Phase Distribution Controller

Overview

The STK672-010 is a 4-phase stepping motor driver IC

that adopts power MOSFET for its output stage and that

uses a unipolar fixed-current chopper scheme. Since the

STK672-010 includes a built-in 4-phase distribution

controller, the stepping motor driver circuit and the control

scheme can be simplified, and the stepping motor driver

circuit structure can be standardized. The STK672-010

provides high torque, low vibration, and rapid response

based on a W1-2 phase excitation drive scheme. The

motor current is voluntary set from externals. Since,

compared to the earlier STK6770 Series, the STK672-010

has a smaller package size and reduced drive power

dissipation (reduced by 70% over previous products), it

provides a wider operating power supply voltage range.

Applications

• Send/receive stepping motors in facsimile equipment

• Stepping motor drive for paper feed and optical systems

in copier, and drum drive in laser beam printers

• Pen drive in X-Y plotters

• Industrial robots and other stepping motor application

products

Features

• The STK672-010 can easily implement stepping motor

drive applications with the provision of a DC power

supply and a clock pulse oscillator.

<4-Phase Distribution Controller>

• The STK672-010 supports four excitation types selected

by the excitation mode setting (M1 and M2).

1. 4-phase 1 excitation

2. 4-phase 1-2 excitation

3. 4-phase 2 excitation

4. 4-phase W1-2 excitation

• Schmitt input pins (for a high noise margin)

• Controller inputs are CMOS compatible (with built-in

pull-up resistors), thus allowing direct control from I/O

ports or special-purpose controller LSIs.

• An interval is set up during mutual switching of the AA

and BB phase output signals in 4-phase 2 excitation

mode.

<Driver Circuits>

• Since the STK672-010 is a separate excitation type

circuit, it supports a wide operating power supply

voltage range. (VCC1 = 5 to 42 V)

• Current detection resistors are provided within the

hybrid IC.

• Drive power reduced by 70% when compared to the

STK6770 Series (at 1 A drive).

• Can provide a motor drive current of up to 1.7 A without

a heat sink.

Package Dimensions

unit: mm

4149

[STK672-010]

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.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

D2094TH (OT) 5-3438 No. 4927-1/17

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