STK672-340-E Datasheet, PDF (1/13 Pages) Sanyo Semicon Device – Thick-Film Hybrid IC Unipolar Fixed-Current Chopper (External-Excited PWM) Scheme and Built-in Phase Signal Distribution IC Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current 2.2A

Ordering number : ENA1254A
STK672-340-E
Thick-Film Hybrid IC
Unipolar Fixed-Current Chopper (External-Excited PWM)
Scheme and Built-in Phase Signal Distribution IC
Two-Phase Stepping Motor Driver
(Square Wave Drive) Output Current 2.2A
http://onsemi.com
Overview
The STK672-340-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 STK672-340-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.
The STK672-340-E features an ENABLE pin, a function not provided in the STK672-120-E. When the ENABLE pin is
set low while the clock signal is being supplied, all MOSFET devices are forced to the off state. When ENABLE is set
high again later, the IC resumes operation, continuing with the prior excitation timing.
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.
Semiconductor Components Industries, LLC, 2013
June, 2013
62911HKPC 5-6520/72308HKIM No.A1254-1/13