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LOGIC SUPPLY
DUAL FULL-BRIDGE PWM MOTOR DRIVER
The UDN2917EB motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. Both bridges are capable of sustaining 45 V and include internal pulse-width modulation (PWM) control of the output current to 1.5 A.
39 PWM 1 38 37 1 36 35 34 33 GND
Data Sheet 29319.22†
SENSE 1
PHASE 1
VREF 1
ENABLE 1 42
OUT 1A
OUT 1B
θ 1 43
41
RC1
E1
I10
I11
44
GND
7 8 9 10 11 12 13
EN1
VCC
40
6
5
4
3
2
1
For PWM current control, the maximum output current is determined by the user’s selection of a reference voltage and sensing resistor. Two logic-level inputs select output current limits of 0, 33%, 67%, or 100% of the maximum level.
UDQ2917 Datasheet
