TMC2041 DATASHEET (Rev. 1.02 / 2017-MAY-16)
11
3.2 5 V Only Supply
22n
+5V
VS
+5V
VCP
100n
100µF
charge pump
Step/Dir interface
100n
4.7µ
O1A1
O1A2
VSA
Full Bridge A
Full Bridge B
N
S
5V Voltage
regulator
stepper
motor #1
5VOUT
Sequencer &
Microplyer
Driver 1
O1B1
O1B2
VCC
470n
CSN/IO0
SCK/IO1
SDI/IO2
SDO
BR1A
BR1B
SPI interface
VS
TMC2041
NEXTADDR
SWIOP
100n
Single wire
interface
SWION
+VIO
O2A1
O2A2
Full Bridge A
Full Bridge B
N
S
stepper
motor #2
SW_SEL
Sequencer &
Microplyer
Driver 2
INT
PP
O2B1
O2B2
INT & position
pulse output
Optional external
clock 12-16MHz
CLK_IN
BR2A
BR2B
VCC_IO
5V
Step/Dir interface
VCC_IO
100n
VCC_IO 3.3V
Figure 3.2 5V only operation
While the standard application circuit is limited to roughly 5.5V lower supply voltage, a 5V only
application lets the IC run from a normal 5V +/-5% supply. In this application, linear regulator drop
must be minimized. Therefore, the major 5V load is removed by supplying VCC directly from the
external supply. In order to keep supply ripple away from the analog voltage reference, 5VOUT should
have an own filtering capacity and the 5VOUT pin does not become bridged to the 5V supply.
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