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A495x-Slide24

In summary, the Allegro MicroSystems A495x family of DC motor driver consists of three single full-bridge drivers; the A4950, A4952, and A4953,  and one dual full bridge driver; the A4954. The A4952, A4953, and A4954 are capable of supporting 2A per bridge. The A4950 is a higher current version of the A4953, rated at 3.5A peak current. Unique features of the A4952 are the open drain fault output and selectable retry feature. Outputs are protected in the event of a shorted load, shorted battery, or short to ground. Internal off-time PWM current control is programmed by a low value sense resistor and a voltage on the VREF pin, limiting in-rush current, maximum stall current, or controlling current limiting.

PTM Published on: 2012-08-08