Thick Film Hybrid IC

Ordering number : EN4867A

O1895HA (OT)/N0794TH (OT) No. 4867-1/10

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

Unipolar Fixed-Current Chopper-Type

4-Phase Stepping Motor Driver

STK6712BMK4

Overview

The STK6712BMK4 is a unipolar fixed-current chopper-

type 4-phase stepping motor driver hybrid IC (HIC) which

uses a MOSFET power device. The excitation sequence

signal is active low.

Applications

• Serial printer, line printer, and laser beam printer (LBP)

paper feed and carriage motor drivers

• PPC scanner and LBP paper feed drivers

• XY plotter pen drivers

• Industrial robot applications, etc.

Features

• This IC has the features of the STK6712BMK3, plus a

simultaneous input prevention circuit that protects the

IC from any malfunction of the excitation signal.

• Self-excitation design means chopping frequency is

determined by motor L and R. Supports chopping at

20 kHz or higher.

• Very low number of external components required.

42V)

• Excitation sequence signal is active low, and is TTL

level for direct interfacing to the microcomputer and

gate array.

• The unipolar design enables use as a driver for hybrid,

PW, or VR type stepping motors.

• Supports W1-2 phase operation, with a dual Vref pin.

Package Dimensions

unit: mm

4129

[STK6712BMK4]