DRV8818 Datasheet, PDF (2/20 Pages) Texas Instruments – STEPPER MOTOR CONTROLLER IC

DRV8818
SLVSAX9A – SEPTEMBER 2011 – REVISED FEBRUARY 2012
FUNCTIONAL BLOCK DIAGRAM
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VM
VCC
VCC
VM
VCC
VGD
Internal
Reference
& Reg
LS Gate
Drive
Thermal
Shut down
Int. VCC
Int. Ref
VREF
Charge
Pump
CP1
CP2
0.22 µF
VM
HS Gate
Drive
VCP
0.22 µF
VM
VMA
VCC
ENABLEn
SLEEPn
STEP
DIR
USM0
USM1
RESETn
SRn
HOMEn
Indexer /
Control
Logic
Motor
Driver A
AOUT1
AOUT2
ISENA
+
Step
Motor
-
+-
VM
VMB
DECAY
RCA
RCB
Motor
Driver B
BOUT1
BOUT2
ISENB
GND
GND
2
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