Datasheet

Charge
Pump and
Gate Drive
Regulator
Thermal
Shut down
AOUT1
AOUT2
BOUT1
BOUT2
GND
ABVREF
0.1uF
16V
0.01uF
35V
+24
Step
Motor
VM
CP1
CP2
VCP
AISEN
BISEN
VCP
+24
OCP
VM
+24
Oscillator
COUT1
COUT2
DOUT1
DOUT2
Step
Motor
VM
CISEN
DISEN
VM
+24
+24
UVLO
RESET
VGD
SDATA
SCLK
SCS
SSTB
RESETn
SLEEPn
Dig.
VCC
V3P3 3.3V
Regulator
0.47uF
6.3V
CDVREF
Serial
Interface &
Logic
PWM H-bridge
driver A
PWM H-bridge
driver B
PWM H-bridge
driver C
PWM H-bridge
driver D
DRV8823
SLVS913D –JANUARY 2009–REVISED JANUARY 2010 www.ti.com
FUNCTIONAL BLOCK DIAGRAM
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