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STK672-430A-E bảng dữ liệu(PDF) 11 Page - ON Semiconductor

tên linh kiện STK672-430A-E
Giải thích chi tiết về linh kiện  2-phase Stepping Motor Driver
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STK672-430A-E
No.A1127-11/21
[Vref (Voltage setting to be used for the current setting reference)]
• Pin type: Analog input configuration, input pull-down resistor 100kΩ
Input voltage is in the voltage range of 0.14V to 1.48V.
[Input timing]
The control IC of the driver is equipped with a power on reset function capable of initializing internal IC operations
when power is supplied. A 4V typ setting is used for power on reset. Because the specification for the MOSFET gate
voltage is 5V
±5%, conduction of current to output at the time of power on reset adds electromotive stress to the
MOSFET due to lack of gate voltage. To prevent electromotive stress, be sure to set ENABLE=Low while VDD,
which is outside the operating supply voltage, is less than 4.75V.
In addition, if the RESETB terminal is used to initialize output timing, be sure to allow at least 10
μs until CLOCK
input.
ENABLE, CLOCK, and RESETB Signals Input Timing
[Configuration of control block I/O pins]
<Configuration of the MODE1, MODE2, MODE3, CLOCK,
<Configuration of the FAULT2 pin>
CWB, ENABLE, and RESETB input pins>
The input pins of this driver all use Schmitt input. Typical specifications at Tc=25
°C are given below. Hysteresis
voltage is 0.3V (VIHa-VILa).
4Vtyp
3.8Vtyp
At least
10
μs
At least
10
μs
No time specification
Control IC power (VDD) rising edge
Control IC power on reset
RESETB signal input
ENABLE signal input
CLOCK signal input
VIHa
When rising
When falling
1.5Vtyp
VILa
1.8Vtyp
Input voltage
Input pin
5V
VSS
10k
Ω
100k
Ω
5V
Overcurrent
Thermal shutdown
50k
Ω
50k
Ω
Output pin
Pin 8
50k
Ω


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