stk672-080-e Sanyo Semiconductor Corporation, stk672-080-e Datasheet - Page 5

• Manufacturer Part Number: stk672-080-e
• Description: Unipolar Constant-current Chopper External Excitation Pwm Circuit With Built-in Microstepping Controller Stepping Motor Driver Sine Wave Drive Output Current 2.8a No Heat Sink*
• Manufacturer: Sanyo Semiconductor Corporation

Test Circuit Diagrams
Vsat
I IH , I IL
Vref=2.5V
I IH
I IL
Start
V CC 2
2.5V
For Ioave measurement: Set switch SW1 to the b position, provide the Vref input and switch over switch SW2.
For fc measurement: Set SW1 to the a position, set Vref to 0V, and switch over switch SW3.
For I CC measurement: Set the ENABLE input to the low level.
+
A
A
11
13
8
9
7
STK672-080-E
M1
M2
M3
CLK
CWB
RESET
ENABLE
Vref
V CC 2
6
1
12
11
10
13
14
15
8
9
7
STK672-080-E
5
4
3
2
A
AB
B
BB
V CC 2
6
1
A13259
STK672-080-E
V CC 1
V
ENABLE
A13257
RL
Vref
Ioave, I CC , fc
Start
+
Vdf
11
15
13
8
9
7
STK672-080-E
STK672-080-E
V CC 2
A
6
1
6
1
5
4
3
2
5
4
3
2
A
AB
B
BB
A
AB
B
BB
SW2
SW3
A
a
V
fc
b a
SW1
V CC 1
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V CC 1
A13258
A
b
A13260