|
|
PDF STK672-120-SL-E Data sheet ( Hoja de datos )
| Número de pieza | STK672-120-SL-E | |
| Descripción | 2-phase Stepping Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de STK672-120-SL-E (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
Ordering number : ENA2140
STK672-120-SL-E
Thick-Film Hybrid IC
2-phase Stepping Motor Driver
http://onsemi.com
Overview
The STK672-120-SL-E is a hybrid IC for use as a unipolar, 2-phase stepping motor driver with PWM current control.
Applications
• Office photocopiers, printers, etc.
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
1-2phase 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 0.165Ω current detection resistor is built in, a
current of 1A is set for each 0.165V 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 2.4A at Tc = 105°C, and of up to 4.0A at Tc = 25°C.
Semiconductor Components Industries, LLC, 2013
June, 2013
O1712HKPC 5-6407 No. A2140-1/11
1 page  
STK672-120-SL-E
Precautions
• To minimize noise in the 5V system, locate the ground side of capacitor CO2 in the above circuit as close as
possibleto pin 1 of the IC.
• Insert resistor RO3 (47 to 100Ω) so that the discharge energy from capacitor CO4 is not directly applied to the
CMOS-IC in this hybrid device. If the diode D1 has Vf characteristics with Vf less than or equal to 0.6V (when If =
0.1A), this will be smaller than the CMOS IC input pin diode Vf. If this is the case RO3 may be replaced with a short
without problem.
• Standard or HC type input levels are used for the pin 7, 8, and 9 inputs.
• If open-collector type circuits are used for the pin 7, 8, and 9 inputs, these circuit will be in the high-impedance state
for high level inputs. As a result, chopping circuit noise may cause the input circuits to operate incorrectly. To prevent
incorrect operation due to such noise, capacitors with values between 470 and 1000pF must be connected between
pins 7 and 11, 8 and 11, and 9 and 11. (A capacitor with a value between 470 and 1000pF must be connected between
pins 6 and 11 as well if an open-collector output IC is used for the RESETB pin (pin 6) input.)
• Taking the input bias current (IIB) characteristics into account, the resistor RO1 must not exceed 100kΩ.
• The following circuit (for a lowered current of over 0.2A) is recommended if the application needs to temporarily
lower the motor current. Here, a value of close to 100kΩ must be used for resistor RO1 to make the transistor output
saturation voltage as low as possible.
5V
RO1
Vref
R3 RO2
5V
RO1
Vref
R3
RO2
Input Pin Functions (CMOS input levels)
Pin Pin No.
Function
Input conditions when operating
CLOCK
9 Reference clock for motor phase current switching
Operates on the rising edge of the signal
MODE
8 Excitation mode selection
Low: 2-phase excitation
High: 1-2 phase excitation
CWB
7 Motor direction switching
Low: CW (forward)
High: CCW (reverse)
RESETB
6 System reset and A, AB, B, and BB outputs cutoff.
A reset is applied by a low level
Applications must apply a reset signal for at least 20μs
when power is first applied.
(1) A simple reset function is formed from D1, CO4, and RO3 in this application circuit. With the CLOCK input
held low, when the 5V supply voltage is brought up a reset is applied if the motor output phases A and BB are
driven. If the 5V supply voltage rise time is slow (over 50ms), the motor output phases A and BB may not be driven.
Increase the value of the capacitor CO4 and check circuit operation again.
(2) See the timing chart for the concrete details on circuit operation.
No. A2140-5/11
5 Page 
STK672-120-SL-E
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No. A2140-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet STK672-120-SL-E.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| STK672-120-SL-E | 2-phase Stepping Motor Driver | ON Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |