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PDF STK672-330 Data sheet ( Hoja de datos )
| Número de pieza | STK672-330 | |
| Descripción | Two-Phase Stepping Motor Driver | |
| Fabricantes | Sanyo Semicon Device | |
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Ordering number : ENN7304
www.DataSheet4U.com
Thick-Film Hybrid IC
STK672-330
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: 1.8 A
Overview
The STK672-330 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 STK672-330 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 STK672-330 features an ENABLE pin, a function not
provided in the STK672-110. 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
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.
• The motor current can be set by changing the Vref pin
voltage. Since a 0.195-Ω current detection resistor is
built in, a current of 1 A is set for each 0.195 V of
applied voltage.
• The input frequency range for the clock signal used for
motor speed control is 0 to 50 kHz.
• Supply voltage ranges: VCC1 = 10 to 42 V, VCC2 =
5.0 V ±5%
• This IC supports motor operating currents of up to 1.8 A
at Tc = 105°C, and of up to 2.65 A at Tc = 25°C.
• Provides a function that, during clock input, forces all
MOSFET devices to the off state when the ENABLE
pin is set low, and then, when ENABLE is set high,
resumes operation continuing with the prior excitation
timing.
Package Dimensions
unit: mm
4192
[STK672-330]
29.5
3.3
1 12
1.0 0.5
2.0
11×2=22
0.4
2.9
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other
parameters) listed in products specifications of any and all SANYO products described or contained
herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
33103RM (OT) No. 7304-1/11
1 page  
• Motor current peak value IOH setting
IOH
STK672-330
www.DataSheet4U.com
O
IOH = Vref ÷ Rs
Vref = (R02 ÷ (R01 + R02)) × 5 V (or 3.3 V)
Rs is the hybrid IC internal current detection resistor.
In the STK672-330 (and STK672-350) Rs is 0.195 Ω.
(In the STK672-340 and STK672-360, Rs is 0.14 Ω.)
ITF02173
Input Pin Functions (TTL input levels)
Pin
CLOCK
MODE
CWB
RESETB
ENABLE
Pin No.
Function
9 Reference clock for motor phase current switching
8 Excitation mode selection
10 Motor direction switching
System reset and A, AB, B, and BB outputs cutoff.
11 Applications must apply a reset signal for at least 10 µs when VDD is first applied.
The A, AB, B, and BB outputs are turned off, and after operation is restored by
12 returning the ENABLE pin to the high level, operation continues with the same
excitation timing as before the low-level input.
Input conditions when operating
Operates on the rising edge of the signal
Low: 2-phase excitation
High: 1-2 phase excitation
Low: CW (forward)
High: CCW (reverse)
A reset is applied by a low level
The A, AB, B, and BB outputs are turned
off by a low-level input.
• A simple reset function is formed from D1, CO4, RO3, and RO4 in this application circuit. With the CLOCK input
held low, when the 5-V supply voltage is brought up a reset is applied if the motor output phases A and BB are driven.
If the 5-V supply voltage rise time is slow (over 50 ms), the motor output phases A and BB may not be driven. Increase
the value of the capacitor CO4 and check circuit operation again.
• See the timing chart for the concrete details on circuit operation.
Usage Notes
• STK672-330 input signal functions and timing (Specifications common to the STK672-340, 350, and 360 as well)
(All inputs have no internal pull-up resistor and are TTL level Schmitt trigger inputs.)
[RESETB and CLOCK (Input signal timing when power is first applied)]
As shown in the timing chart, a RESETB signal input is required by the driver to operate with the timing in which the
F1 gate is turned on first. The RESETB signal timing must be set up to have a width of at least 10 µs, as shown below.
The capacitor CO4, and the resistors RO3 and RO4 in the application circuit form simple reset circuit that uses the RC
time constant rising time. However, when designing the RESETB input based on VIH levels, the application must have
the timing shown in figure 1.
Rise of the 5-V supply voltage
RESETB signal input
CLOCK signal
At least 10 µs
At least 5 µs
Figure 1 RESETB and CLOCK Signals Input Timing
No. 7304-5/11
5 Page 
STK672-330
www.DataSheet4U.com
Figure 3
3.0
IOH — Tc
200 Hz, 2 phase excitation
2.5
Hold mode
2.0
1.5
1.0
0.5
0
0 10
Figure 5
80
20 30 40 50 60 70 80 90
Operating Substrate Temperature, Tc — °C
∆Tc — PD
100 110
ITF02176
70
60
50
40
30
20
10
00 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Hybrid IC internal average power dissipation, PD — W
ITF02178
Figure 4
14
PD — IOH
13 VCC = 24 V, VDD = 5.0 V
500 Hz, 2 phase excitation
12 Motor R = 0.63 Ω
11 I = 0.62 mH
10 The data are peak values.
9
8
7
6
5
4
3
2
1
0
0 0.5 1.0 1.5 2.0
Motor current, IOH — °C
2.5 3.0
ITF02177
Specifications of any and all SANYO 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’s
products or equipment. To verify symptoms and states that cannot be evaluated in an independent device,
the customer should always evaluate and test devices mounted in the customer’s products or equipment.
SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all
semiconductor products fail with some probability. It is possible that these probabilistic failures could
give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire,
or that could cause damage to other property. When designing equipment, adopt safety measures so
that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective
circuits and error prevention circuits for safe design, redundant design, and structural design.
In the event that any or all SANYO products (including technical data, services) described or contained
herein are controlled under any of applicable local export control laws and regulations, such products must
not be exported without obtaining the export license from the authorities concerned in accordance with the
above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system,
or otherwise, without the prior written permission of SANYO Electric Co., Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the “Delivery Specification”
for the SANYO product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not
guaranteed for volume production. SANYO believes information herein is accurate and reliable, but
no guarantees are made or implied regarding its use or any infringements of intellectual property rights
or other rights of third parties.
This catalog provides information as of March, 2003. Specifications and information herein are subject to
change without notice.
PS No. 7304-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet STK672-330.PDF ] | |
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