Data Sheet

GND GNDPPAD
nFAULT
nHOME
nSLEEP
nRESET
MODE2
MODE1
MODE0
DIR
STEP
nENBL
Control
Logic/Indexer
DECAY
Internal
VCC
Low Side
Gate
Drive
V3P3OUT
BVREF
AVREF
3.3 V
3.3 V
V3P3OUT
Thermal
Shut
Down
Motor Driver
B
Motor Driver
A
Charge
Pump
ISENB
BOUT2
BOUT1
VMB
ISENA
AOUT2
AOUT1
VMA
VCP
CP2
CP1
VM
VM
VM
HS Gate
Drive
LS Gate
Drive
VM
VM
+
+ ±
±
Stepper
Motor
+
DRV8825
SLVSA73F –APRIL 2010–REVISED JULY 2014 www.ti.com
8.2 Functional Block Diagram
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