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STK672-080-E Scheda tecnica(PDF) 6 Page - Sanyo Semicon Device

Il numero della parte STK672-080-E
Spiegazioni elettronici  Stepping Motor Driver Output Current 2.8A
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Produttore elettronici  SANYO [Sanyo Semicon Device]
Homepage  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

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STK672-080-E
No.6507-6/18
Power-on Reset
The application must perform a power-on reset operation when VCC2 power is first applied to this hybrid IC.
Application circuit that used 2W1-2 phase excitation (microstepping operation) mode.
Setting the Motor Current
The motor current IOH is set by the Vref voltage on the hybrid IC pin 7. The following formula gives the relationship
between IOH and Vref.
RoX = (Ro2
× 6kΩ) ÷ (Ro2 + 6kΩ)
(1)
Vref = VCC2 × RoX ÷ (Ro1 + RoX)
(2)
IOH =
×
(3)
K: 4.7 (Voltage divider ratio),
Rs: 0.15
Ω (This is the hybrid IC's internal current detection resistor. It has a tolerance of ±3%.)
Applications can use motor currents from the current (0.05 to 0.1A) set by the duty of the frequency set by the oscillator
up to the limit of the allowable operating range, IOH = 2.8A
Function Table
M2
0
0
1
1
M1
M3
0
1
0
1
Phase switching clock edge timing
1
2 phase excitation
1-2 phase excitation
W1-2 phase excitation
2W1-2 phase excitation
Rising edge only
0
1-2 phase excitation
W1-2 phase excitation
2W1-2 phase excitation
4W1-2 phase excitation
Rising and falling edges
Forward
Reverse
ENABLE
Motor current is cut off when low
CWB
0
1
RESET
Active low
K
1
Rs
Vref
7
5
A
AB
6
14
14
8
14
14
9
14
14
12
15
11
13
10
14
+
+
VCC2=5V
VCC2=5V
SG
PG
Vref
Ro1
Ro2
VCC2=5V
CLK
ENABLE
CBW
RESET
MOI
VCC1=10V to 45V
Two-phase stepping motor
STK672-080-E
A13261
B
BB
RoX
4
3
2
1
VF 0.3V
Simple power on reset circuit
(This circuit cannot be used for
power supply voltage drop
detection.)
We recommend a value of about
100
Ω for Ro2 to minimize the
influence of the Vref pin internal
impedance, which is 6k
Ω
RoX: Input impedance: 6k
Ω±30%
Motor current waveform
Ioave
IOL IOH
0A
A13262


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