DRV777 Datasheet, PDF (7/17 Pages) Texas Instruments – 7- bit Integrated Motor and Relay Driver

DRV777
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SLRS062 – DECEMBER 2012
Unipolar Stepper Motor Driver
Figure 4 shows an implementation of DRV777 for driving a uniploar stepper motor. The unconnected input
channels can be used for other functions. When an input pin is left open the internal 300kΩ pull down resistor
pulls the respective input pin to GND potential. For higher noise immunity use an external short across an
unconnected input and GND pins.
Motor Control Pulses
(3V to 5V)
DRV777
IN1
OUT1
IN2
OUT2
IN3
OUT3
IN4
OUT4
IN5
OUT5
IN6
OUT6
IN7
OUT7
GND
COM
Phase_A
Phase_C
Phase_B
Phase_D
Motor
Motor Supply (Up to 8V)
VSUP
VSUP
Figure 4. DRV777 as a Stepper Motor Driver
Copyright © 2012, Texas Instruments Incorporated
Product Folder Links: DRV777
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