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STK672-330 Datenblatt(PDF) 4 Page - Sanyo Semicon Device

Teilenummer STK672-330
Bauteilbeschribung  Two-Phase Stepping Motor Driver (Square Wave Drive) Output Current: 1.8 A
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Hersteller  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

STK672-330 Datenblatt(HTML) 4 Page - Sanyo Semicon Device

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Sample Application Circuit
• To minimize noise in the 5-V system, locate the ground side of capacitor CO2 in the above circuit as close as possible
to pin 1 of the IC. Also, if at all possible, the ground used for Vref must not be common to the P.GND pattern, but must
be directly wired from pin 1.
• Insert resistor RO3 (47 to 100
Ω) 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 0.6 V (when If = 0.1 A), 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.
• Both TTL and CMOS levels are used for the pin 8, 9, 10, 11 and 12 inputs.
• Since the input pins do not have built-in pull-up resistors, when the open-collector type pins 8, 9, 10, 11, and 12 are
used as inputs, a 10 to 47 k
Ω pull-up resistor (to V
DD) must be used.
• To prevent incorrect operation due to chopping noise, we recommend inserting 470 to 1000 pF capacitors between pin
1 and each of the pins 8, 9, 10, and 12.
(With the open-collector type IC, we also recommend inserting a 470 to 1000 pF capacitor between pin 11 (RESETB)
and pin 1 when pin 11 is used as an input.)
• The following circuit (for a lowered current of over 0.2 A) is recommended if the application needs to temporarily
lower the motor current. Here, a value of close to 100 k
Ω must be used for resistor RO1 to make the transistor output
saturation voltage as low as possible.
No. 7304-4/11
STK672-330
STK672-330
Two-phase stepping motor
At least 100
µF
VDD = 5 V
CLOCK
MODE
CWB
5 V
5 V
RESETB
6
9
8
10
11
7
ENABLE
12
D1
RO3
RO4
20 k
CO4
10
µF
RO1
Vref
RO2
0.1
µF
CO1
CO3
+
+
+
5
A
4
AB
3
B
2
BB
1
GND
CO2
VCC
24 V
P.GND
ITF02170
10
µF
5 V
RO1
RO2
RO3
Vref
ITF02171
ITF02172
5 V
RO1
RO2
RO3
Vref


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