Single supply eliminates need for external LDO.
Allegro MicroSystems Europe has introduced a new automotive bipolar stepper motor driver IC or dual DC motor driver IC that is designed for pulse-width-modulated (PWM) control of low-voltage stepper motors and dual or single high current DC motors. Allegro’s AMT49702 is capable of output currents up to 1 A per channel and operating voltages from 3.5 to 15 V. Key applications include: Heads-up-Display (HUD) – mirror positioning and dust cover, Navigation – screen lift, Driver Attention Monitor – camera movement or focus, and Steering Wheel Feedback – vibration alert.
The AMT49702 is an automotive-grade device and is tested across extended temperature and voltage ranges to ensure compliance in automotive or industrial applications. It has an internal fixed off-time PWM timer that sets a peak current based on the selection of a current sense resistor. An output fault flag is provided that notifies the user of a TSD or overcurrent protection event.
The AMT49702 is supplied in a low-profile 16-lead TSSOP (suffix “LP”) with exposed power tab for enhanced thermal dissipation.
Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Allegro's innovative solutions serve high-growth applications within the automotive market, with additional focus on office automation, industrial, and consumer/communications solutions. Allegro is headquartered in Worcester, Massachusetts (USA) with design, applications, and sales support centres located worldwide. Further information about Allegro can be found at www.allegromicro.com
Allegro MicroSystems Europe, headquartered in Chertsey, United Kingdom, is the European sales and marketing operation, and operates a network of representatives and distributors throughout Europe. Allegro has a technical and marketing centre in Heidelberg in Germany. Allegro also has an engineering design centre in Edinburgh in Scotland and a technical and marketing centre in Annecy in France.