DRV8821_15 Datasheet, PDF (2/23 Pages) Texas Instruments – DUAL STEPPER MOTOR CONTROLLER/DRIVER

DRV8821
SLVS912I – JANUARY 2009 – REVISED JANUARY 2014
0.47µF
6.3V
V3P3
ABVREF
ABSTEP
ABDIR
ABENBLn
ABU SM0
ABUSM1
ABDECAY
ABRESETn
CDSTEP
CDDIR
CDENBLn
CDUSM0
CDUSM1
CD DEC AY
CDRESETn
CDVREF
FUNCTIONAL BLOCK DIAGRAM
Dig.
VCC
I ndexer
Logic
3.3V
Re gulator
PWM H-b ridge
driver A
PWM H-bridge
driver B
PWM H-bridge
driver C
PWM H-bridge
driver D
Charge
Pump and
Gat e Drive
Regulator
VGD VCP
·
CP1
0.01µF
35V
CP2
+24
VCP
0. 1µF
+24
16 V
VM
·
0.1µF, 35V
AOUT1
AOUT2
AISEN
+24
VM
BOUT1
·
0.1µF, 35V
BOUT2
BISEN
+24
VM
COUT1
·
0.1µF, 35V
COUT2
CI SEN
+24
VM
DOUT1
·
0.1µF, 35V
DOUT2
DISEN
Step
Motor
Step
Motor
OCP
Thermal
Shut down
Oscillator
UVLO
RESET
GND
www.ti.com
2
Submit Documentation Feedback
Product Folder Links: DRV8821
Copyright © 2009–2014, Texas Instruments Incorporated