Allegro MicroSystems Inc., is a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits. In the Power Solutions market, Allegro offers a variety of power management ICs including, LED Drivers, MOSFET Drivers, Voltage Regulators and Motor Control ICs.
Learn more about supplier. Click here to view all Allegro-Microsystems power products available at Digi-Key
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DC Motor Drive
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 Designed for pulse width modulated (PWM) control of a low voltage DC motor, Allegro MicroSystems' A3918 is capable of output currents up to 1.5 A and operating voltages from 2.5 to 9 V. The A3918 has an internal fixed off-time PWM timer that sets a peak current based on the selection of a current sense resistor. An overcurrent output flag is provided that notifies the user when the current in the motor winding reaches the peak current determined by the sense resistor.
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