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PDF STK672-640C-E Data sheet ( Hoja de datos )
| Número de pieza | STK672-640C-E | |
| Descripción | 2-phase Stepping Motor Driver | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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Ordering number : ENA2116
STK672-640C-E
Thick-Film Hybrid IC
2-phase Stepping Motor Driver
http://onsemi.com
Overview
The STK672-640C-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
• Built-in opened motor pin detection function (output current OFF).
• Built-in overcurrent detection function (output current OFF).
• Built-in overheat detection function (output current OFF).
• If opened motor pin, over-current, or overheat detection function is activated, the FAULT1 signal (active low) is
output. The FAULT2 signal is used to output the result of activation of protection circuit detection at 3 levels.
• Built-in power on reset function.
• The motor speed is controlled by the frequency of an external clock signal.
• 2 phase or 1-2 phase excitation switching function.
• Using either or both edges of the clock signal switching function.
• Phase is maintained even when the excitation mode is switched.
• Rotational direction switching function.
• Supports schmitt input for 2.5V high level input.
• Incorporating a current detection resistor (0.089Ω: resistor tolerance ±2%), motor current can be set using two
external resistors.
• The ENABLE pin can be used to cut output current while maintaining the excitation mode.
• With a wide current setting range, power consumption can be reduced during standby.
• No motor sound is generated during hold mode due to external excitation current control.
Semiconductor Components Industries, LLC, 2013
June, 2013
82912HKPC 018-11-0017 No. A2116-1/27
1 page  
Block Diagram
STK672-640C-E
VDD=5V 9
MODE1 10
N.C 11
MODE2 17
CLOCK 12
CWB 13
RESETB 14
ENABLE 15
FAULT1 16
N.C 18
Vref 19
FAULT2 VrefOP
87
A
4
AB
5
Excitation mode
selection
Phase
advance
counter
Power-on
reset
VDD
Phase
excitation
signal
generator
Latch
Circuit
Latch
Circuit
Output
open
detection
Overcurrent
detection
FAO
FAB
FBO
FBB
F1
F2
R1
FAULT1
FAULT2
signal
Current control
chopper circuit
Vref/4.9
AI
BI
Overheating Latch
detection Circuit
Amplifier
VSS
VSS
Vref
B BB
31
F3 F4
R2
2 P.G2
6 P.G1
Sample Application Circuit
VDD(5V)
CLOCK
MODE1
MODE2
CWB
ENABLE
FAULT1
FAULT2
STK672-640C-E
9
12
10
17
13
15
RESETB
14
A
4
AB
5
3B
BB
1
2 phase stepping motor driver
R01 R03
16
8
Vref
19
R02 0.1μF
C02
P.G2
2
6
P.G1
18
N.C
VCC
24V
+ C01
at least 100μF
P.GND
No. A2116-5/27
5 Page 
2 phase excitation (MODE 2)
VDD
Power On Reset
(or RESETB)
MODE1
MODE2
CWB
CLOCK
ENABLE
FAO
FAB
FBO
FBB
1-2 phase excitation (MODE 2)
VDD
Power On Reset
(or RESETB)
MODE1
MODE2
CWB
CLOCK
ENABLE
FAO
FAB
FBO
FBB
STK672-640C-E
No. A2116-11/27
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet STK672-640C-E.PDF ] | |
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