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STK672-640A-E データシート(PDF) 6 Page - ON Semiconductor

部品番号 STK672-640A-E
部品情報  2-phase Stepping Motor Driver
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

STK672-640A-E データシート(HTML) 6 Page - ON Semiconductor

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STK672-640A-E
No. A1130-6/21
[Smoke Emission Precuations]
If Pin 18 (S.G terminal) is attached to the PCB without using solder, overcurrent may flow into the MOSFET at
VCCON (24V ON), causing the STK672-630A-E, STK672-640A-E to emit smoke because 5V circuits cannot be
controlled.
In addition, as long as one of the output Pins, 1, 3, 4, or 5, is open, inductance energy stored in the motor results in
electrical stress on the driver, possibly resulting in the emission of smoke.
Input Pin Functions
Pin Name
Pin No.
Function
Input Conditions When Operating
CLOCK
12
Reference clock for motor phase current switching
Operates on the rising edge of the signal (MODE2=H)
MODE1
10
Low: 2-phase excitation
High: 1-2 phase excitation
MODE2
17
Excitation mode selection
High: Rising edge
Low: Rising and falling edge
CWB
13
Motor direction switching
Low: CW (forward)
High: CCW (reverse)
RESETB
14
System reset
Initial state of A and BB phase excitation in the timing
charts is set by switching from low to high.
A reset is applied by a low level
ENABLE
15
The A, AB, B, and BB outputs are turned off, and after
operation is restored by returning the ENABLE pin to the
high level, operation continues with the same excitation
timing as before the low-level input.
The A, AB, B, and BB outputs are turned off by a low-
level input.
Output Pin Functions
Pin Name
Pin No.
Function
Input Conditions When Operating
FAULT
16
Monitor pin used when over-current detection or overheat
detection function is activated.
Low level is output when detected.
Note: See the timing chart for the concrete details on circuit operation.


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