Schematic

VMVCC
B+
B-
A-
A+
3k
R15
VCC
NP
R17
NP
R14
220 pF
C11
6.3k
R13
VCC
100k
R18
10k
R1
AGC
10k
R2
VCC
NP
R7
NP
R8
CLIM0
CLIM1
BOOST
VCC
0.1 uF
C6
0.1 uF
C7
1
2
1
2
B+
A+
A-
B-
VIN
Q1
C1
47 uF
D1
100k
R9
0.1 uF
C4
0.1 uF
C5
VM
100k
R12
100k
R10
IOREF
VCC
FLIM
VCC
VM
100k
R3
NP
R6
100k
R4
100k
R5
100k
R11
C2
47 uF
0.022 uF
C8
Locations for optional external
0.22 uF
C9
VM
0.1 uF
C10
IOREF IOREF
NP
R19
1 2
1 2
NP
R20
NP
R21
NP
R22
TORQE0
TORQE1
TORQE2
MODE0
MODE1
MODE2
LTH
AGC
CLIM0
CLIM1
FLIM
BOOST
VREF
IF_SEL
RS_SEL
GAIN_SEL
EDG_SEL
DIR
1
2
4
3
5
6
7
8
9
10
1
2
4
3
5
1
2
STANDBY
RESET
MO
LO1
LO0
4.7 uF
C3
1
2
1
2
4
3
5
6
7
8
VIN
B+
A+
A-
B-
VIN
TB67S128FTG Stepper Motor Driver Carrier
Schematic diagram
©2019 Pololu Corporation
www.pololu.com
R
1
2
4
3
5
6
7
8
9
10
11
12
13
14
15
VCC
clockwise
R16
10k
LO1
63
OUT_A-
24
OUT_B-
25
LO0
62
MODE0
49
MODE1
50
CLK
52
CW/CCW/DATA
53
MO
64
MODE2
51
GND
39
OUT_A+
22
OUT_A+
21
OUT_A-
23
OUT_B-
26
OUT_B+
27
OUT_B+
28
VREF
10
TEST_VF
16
GND
40
VCC
14
RS_A
18
SGND
4
RS_A
19
RS_B
30
RS_B
31
VM
33
VM
34
CPOUT
36
RESET/BANK_EN
56
ENABLE/LATCH
55
PAD
69
CPAD
65
CPAD
66
CPAD
67
CPAD
68
OSCM
5
LTH
15
CLIM1
7
FLIM
8
CLIM0
6
STANDBY
54
BST
9
AGC
47
NC
13
NC
17
NC
20
NC
29
NC
32
NC
35
NC
48
TESTI_2
60
TESTI_3
61
TESTI_1
59
TESTO_2
2
TESTO_3
3
TESTO_1
1
CP-
38
CP+
37
EDG_SEL
58
MDT0
42
MDT1
43
GND
41
TORQE0
44
TORQE1
45
TORQE2
46
GAIN_SEL
57
IF_SEL
11
RS_SEL
12
TB67S128FTG
current sense resistors
IOREF
MDT1
MDT0
ENABLE
STEP