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Ordering number : EN4867A

Thick Film Hybrid IC

STK6712BMK4

Unipolar Fixed-Current Chopper-Type

4-Phase Stepping Motor Driver

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.

Package Dimensions

unit: mm

4129

[STK6712BMK4]

Applications

鈥?Serial printer, line printer, and laser beam printer (LBP)

paper feed and carriage motor drivers

鈥?PPC scanner and LBP paper feed drivers

鈥?XY plotter pen drivers

鈥?Industrial robot applications, etc.

Features

鈥?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.

鈥?Self-excitation design means chopping frequency is

determined by motor L and R. Supports chopping at

20 kHz or higher.

鈥?Very low number of external components required.

鈥?Wide operating supply voltage range (V

CC

1 = 18 to

42V)

鈥?Excitation sequence signal is active low, and is TTL

level for direct interfacing to the microcomputer and

gate array.

鈥?The unipolar design enables use as a driver for hybrid,

PW, or VR type stepping motors.

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

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

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

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