Datasheet

ULN2003V12
IN3
IN4
OUT1
OUT2
OUT3
OUT4
IN5
IN6
IN7
GND
OUT5
OUT6
OUT7
COM
IN1
IN2
Motor Supply(Up to 20V)
Motor Control Pulses
(3V to 5V)
Phase_C
Phase_B
Phase_D
Motor
VSUP
Phase_A
VSUP
ULN2003V12
www.ti.com SLRS060A –MAY 2012–REVISED JUNE 2012
Unipolar Stepper Motor Driver
Figure 7 shows an implementation of ULN2003V12 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.
Figure 7. ULN2003V12 as a Stepper Motor Driver
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Product Folder Link(s): ULN2003V12