STK672-110-E Sanyo Semiconductor Corporation, STK672-110-E Datasheet - Page 4

• Manufacturer Part Number: STK672-110-E
• Description: Two-phase Stepping Motor Driver Square Wave Drive Output Current 1.8a
• Manufacturer: Sanyo Semiconductor Corporation

Sample Application Circuit
• To minimize noise in the 5V system, locate the ground side of capacitor CO2 in the above circuit as close as possible
• Insert resistor RO3 (47 to 100Ω) so that the discharge energy from capacitor CO4 is not directly applied to the CMOS
• Standard or HC type input levels are used for the pin 7, 8, and 9 inputs.
• If open-collector type circuits are used for the pin 7, 8, and 9 inputs, these circuit will be in the high-impedance state
• Taking the input bias current (I IB ) characteristics into account, the resistor RO1 must not exceed 100kΩ.
• The following circuit (for a lowered current of over 0.2A) is recommended if the application needs to temporarily
for high level inputs. As a result, chopping circuit noise may cause the input circuits to operate incorrectly. To prevent
incorrect operation due to such noise, capacitors with values between 470 and 1000pF must be connected between
to pin 1 of the IC.
IC in this hybrid device. If the diode D1 has Vf characteristics with Vf less than or equal to 0.6V (when If = 0.1A),
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.
pins 7 and 11, 8 and 11, and 9 and 11. (A capacitor with a value between 470 and 1000pF must be connected between
pins 6 and 11 as well if an open-collector output IC is used for the RESETB pin (pin 6) input.)
lower the motor current. Here, a value of close to 100kΩ must be used for resistor RO1 to make the transistor output
saturation voltage as low as possible.
V DD =5V
CO4
D1
CLOCK
MODE
CWB
5V
10μF
+
RO3
RO3
RO1
RO2
RESETB
RO1
RO2
5V
0.1μF
Vref
CO1
5V
CO3
Vref
10μF
+
10
9
8
7
6
12
STK672-110-E
11
STK672-110-E
5
4
3
2
1
A
AB
B
BB
GND
Two-phase stepping motor
RO3
RO2
RO1
5V
Vref
+
CO2
At least 100μF
P.GND
ITF02597
V CC
24V
No.6041-4/9