Datasheet

Charge
Pump
Thermal
Shut down
AOUT1
AOUT2
BOUT1
BOUT2
Internal Ref
GNDGND
VCC
0.22 µF
0.22 µF
VM
Step
Motor
VMA
VMB
CP1
CP2
VCP
ISENA
ISENB
STEP
DIR
USM0
USM1
VREF
HS Gate
Drive
VM
VM
Internal
Reference
and
Regulator
Internal VCC
VGD
Motor
Driver B
RCA
DECAY
Indexer /
Control
Logic
RESETn
Motor
Driver A
ENABLEn
SLEEPn
HOMEn
VM
VCC
VCC
RCB
VCC
SRn
LS Gate
Drive
+
+
-
-
DRV8811
SLVS865G –SEPTEMBER 2008–REVISED MAY 2010 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
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