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The UDN2916B, UDN2916EB, and UDN2916LB motor drivers are 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 750 mA. The outputs have been optimized for a low output saturation voltage drop (less than 1.8 V total source plus sink at 500 mA).

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. A PHASE input to each bridge determines load current direction.

FEATURES

■ 750 mA Continuous Output Current

■ 45 V Output Sustaining Voltage

■ Internal Clamp Diodes

■ Internal PWM Current Control

■ Low Output Saturation Voltage

■ Internal Thermal Shutdown Circuitry

■ Similar to Dual PBL3717, UC3770