Allegro Released A4952 and A4953

Published:2011/9/9 2:23:00 Author:Amy From:SeekIC

Allegro MicroSystems Inc., a leader in developing, manufacturing and marketing high-performance power and Hall-effect sensor integrated circuits, introduced two devices that complement the next generation family of fully-integrated single, full-bridge motor driver ICs. Rated for peak output currents to ±2 A, and operating voltages to 40 V, Allegro’s A4952 and A4953 are uses in brush DC motor drive applications. Input terminals are to control the speed and direction of a DC motor. Both devices feature internal fixed off-time PWM where the maximum current can be adjusted by the user’s selection of an optional sense resistor and the voltage applied to a VREF pin. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation. Internal circuit protection includes overcurrent protection (OCP), motor lead short to ground or supply, thermal shutdown with hysteresis, under voltage monitoring of VBB, and crossover current protection. The A4952 includes a FAULT pin and the ability to change the behavior of the OCP latch based on the logic level applied to the RTRY pin.

These devices are primarily targeted at the office automation market; however, they are also ideal for commercial and industrial applications requiring a brush DC motor driver IC.

The A4952ELYTR-T in 10-pin MSOP package is available now, and A4953ELJTR-T in an 8-pin SOICN package. The A4952ELYTR-T is priced at $0.91 and the A4953ELJTR-T is priced at $0.81 with the quantity of 1,000.

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