61108HKIM/12799RM (OT) No.6041-1/9

STK672-110-E

Overview

The STK672-110-E is a unipolar fixed-current chopper type 2-phase stepping motor driver hybrid IC. It features power

MOSFETs in the output stage and a built-in phase signal distribution IC. The incorporation of a phase distribution IC

allows the STK672-110-E to control the speed of the motor based on the frequency of an external input clock signal.

It supports two types of excitation for motor control: 2-phase excitation and 1-2 phase excitation. It also provides a function

for switching the motor direction.

Applications

• Two-phase stepping motor drive in send/receive facsimile units

• Paper feed in copiers, industrial robots, and other applications that require 2-phase stepping motor drive

Features

• The motor speed can be controlled by the frequency of an external clock signal (the CLOCK pin signal).

• The excitation type is switched according to the state (low or high) of the MODE pin. The mode is set to 2-phase or 1-2

phase excitation on the rising edge of the clock signal.

• A motor direction switching pin (the CWB pin) is provided.

• All inputs are schmitt inputs and 40kΩ (typical: –50 to +100%) pull-up resistors are built in.

• The motor current can be set by changing the Vref pin voltage. Since a 0.22Ω current detection resistor is built in, a

current of 1A is set for each 0.22V of applied voltage.

• The input frequency range for the clock signal used for motor speed control is 0 to 25kHz.

• Supply voltage ranges: VCC = 10 to 42V, VDD = 5.0V ±5%

• This IC supports motor operating currents of up to 1.8A at Tc = 105°C, and of up to 2.65A at Tc = 25°C.

Ordering number : EN6041A

Thick-Film Hybrid IC

Unipolar Fixed-Current Chopper (Self-Excited PWM)

Scheme and Built-in Phase Signal Distribution IC

Two-Phase Stepping Motor Driver

(Square Wave Drive) Output Current 1.8A

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.