Datasheet

VM
VCP
AOUT1
AOUT2
BOUT1
BOUT2
NFAULT
VINT
AISEN
BISEN
GND
NENBL/AENBL
STEP/BENBL
DIR/BPHASE
M0/APHASE
M1
CONFIG
VREFO
AVREF
BVREF
ADECAY
NSLEEP
BDECAY
VM
Motor A Enable
Motor B Enable
Motor B Direction
Motor A Direction
LOW = SLEEP
VM
10 uf
0.01 uf
2.2 uf
M
M
DRV8834
www.ti.com SLVSB19C –FEBRUARY 2012–REVISED JUNE 2013
APPLICATIONS INFORMATION
The DRV8834 is a very flexible motor driver. It can be used to drive two DC motors or a stepper motor, in a
number of different configurations.
The following applications schematics show various configurations and connections for the DRV8834.
Note that component values, especially for RSENSE and the DECAY pins, may be different depending on your
motor and application. Refer to the information above to determine the best values for these components in your
application.
Phase/Enable Mode Driving Two DC Motors
In this configuration, the DRV8834 is used to drive two independent DC motors. Current up to 1 A per motor is
possible. The M1 pin is pulled low to allow slow decay PWM from the controller (if desired) to control the motor
speed by PWMing the xENBL inputs, and ADECAY and BDECAY are connected to ground to set slow decay
mode during current limiting. The value of the RSENSE resistors shown is for a 1-A current limit; if current
limiting is not needed, the AISEN and BISEN pins may be connected directly to ground. If the sleep function is
not needed, nSLEEP can be connected to VM with an approximate 47-kΩ resistor.
Figure 4. Phase/Enable Mode Driving Two DC Motors
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Product Folder Links: DRV8834