stk672-050-e ON Semiconductor, stk672-050-e Datasheet - Page 5

• Manufacturer Part Number: stk672-050-e
• Description: Thick-film Hybrid Ic Unipolar Constant-current Chopper External Excitation Pwm Circuit With Built-in Microstepping Controller Stepping Motor Driver Sine Wave Drive Output Current 3.0a No Heat Sink*
• Manufacturer: ON Semiconductor

Test Circuit Diagrams
Vsat
Vref=2.5V
I IH , I IL
I IL
I IH
A
Start
V CC 2
+
M1
M2
M3
M4
M5
CLK
CWB
RESET
RETURN
ENABLE
Vref
14
10
16
9
8
STK672-050-E
10
11
12
13
14
14
15
16
17
18
9
8
V CC 2
22
STK672-050-E
7
V CC 2
22
7
6
5
2
1
4
3
A
A
B
B
ITF02393
measuring I CC
STK672-050-E
ITF02391
V CC 1
Low when
V
Vref=1V 0V
5V
When measuring Ioave: With SW1 set to ‘a’, Vref = 0.6V
When measuring fc: With SW1 set to ‘b’, Vref = 0V
When measuring I CC : Set ENABLE low
Ioave, I CC , fc
0V
Start
Vdf
V CC 2
+
STK672-050-E
14
10
18
16
9
8
22
7
STK672-050-E
V CC 2
22
A
7
6
5
2
1
4
3
A
A
B
B
6
2
5
1
A
A
B
B
A
SW2
a
ITF02392
No.5228-5/19
b a
SW1
V CC 1
V
V CC 1
ITF02394
A
b