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STK672-120

Sanyo Semicon Device
Part Number STK672-120
Manufacturer Sanyo Semicon Device
Description Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current: 2.4 A
Published Nov 2, 2005
Detailed Description Ordering number : EN6042 Thick-Film Hybrid IC STK672-120 Unipolar Fixed-Current Chopper (Self-Excited PWM) Scheme and ...
Datasheet PDF File STK672-120 PDF File

STK672-120
STK672-120


Overview
Ordering number : EN6042 Thick-Film Hybrid IC STK672-120 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: 2.
4 A Overview The STK672-120 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 STK672-120 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 • All input are Schmitt inputs and 40-kΩ (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.
165-Ω current detection resistor is built in, a current of 1 A is set for each 0.
165 V of applied voltage.
• The input frequency range for the clock signal used for motor speed control is 0 to 25 kHz.
• Supply voltage ranges: VCC1 = 10 to 42 V, VCC2 = 5.
0 V ±5% • This IC supports motor operating currents of up to 2.
4 A at Tc = 105°C, and of up to 4.
0 A at Tc = 25°C.
Package Dimensions unit: mm 4167 [STK672-120] 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.
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