Datasheet

TMC2041 DATASHEET (Rev. 1.02 / 2017-MAY-16) 11
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3.2 5 V Only Supply
VCC_IO
5V Voltage
regulator
charge pump
VCP
22n
100n
CLK_IN
+5V
5VOUT
VSA
4.7µ
INT
PP
INT & position
pulse output
DRV_ENN
DRV_ENN
GNDP GND GNDA TST_MODE DIE PAD
VCC
Optional external
clock 12-16MHz
100n
470n
Full Bridge A
Full Bridge B
+5V
VS
stepper
motor #1
N
S
O1A1
O1A2
BR1A
R
S1B
O1B1
O1B2
Driver 1
100n
BR1B
R
S1A
Full Bridge A
Full Bridge B
stepper
motor #2
N
S
O2A1
O2A2
BR2A
R
S2B
O2B1
O2B2
Driver 2
BR2B
R
S2A
VS
100n
+5V
100µF
CPI CPO
VCC_IO
5V
VCC_IO 3.3V
TMC2041
Step/Dir interface
STEP1 DIR1
Step/Dir interface
Sequencer &
Microplyer
Sequencer &
Microplyer
SPI interface
CSN/IO0
SCK/IO1
SDO
SDI/IO2
Single wire
interface
SWION
SW_SEL
SWIOP
NEXTADDR
+V
IO
STEP2 DIR2
Figure 3.2 5V only operation
While the standard application circuit is limited to roughly 5.5 V lower supply voltage, a 5 V only
application lets the IC run from a normal 5 V +/-5% supply. In this application, linear regulator drop
must be minimized. Therefore, the major 5 V 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.