TMC5161 DATASHEET (Rev. 1.01 / 2018-NOV-20)
11
2 Pin Assignments
2.1 Package Outline
RSB
RSA
OA1
OB2
x
x
OA2
OB1
VM
38
37
36
35
34
33
32
31
30
29
28
1
2
CB1
12VOUT
-
CA2
VCP
x
3
x
-
4
VSA
VS
x
5
-
CPI
6
5VOUT
GNDA
SRAL
-
CPO
7
VCC
8
DRV_ENN
-
x
9
x
10
11
SRAH
SRBH
DIAG1_SWP
DIAG0_SWN
GNDP
x
x
Figure 2.1 TMC5161-LA package and pinning QFN (10x10mm²)
2.2 Signal Descriptions
Pin
Pin
Type Function
Bootstrap capacitor positive connection.
CB1
1
Output of internal 11.5V gate voltage regulator and supply pin
of low side gate drivers. Attach 2.2µF (to 10µF) ceramic
capacitor to GND plane near to pin for best performance. In
case an external gate voltage supply is available, tie VSA and
12VOUT to the external supply.
12VOUT
2
3, 5, 9,
30, 36, x
Unused pins. May be left open or connected to any potential.
The corner pins should be soldered to improve centering.
unused / x
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