Allegro MicroSystems A1442
The A1442 is a full-bridge motor driver designed to drive lowvoltage, brushless DC motors. This includes the Hall element, the motor control circuitry, and the full output bridge. The A1442 is optimized for vibration motor applications in cellular phones, pagers, electronic toothbrushes, hand-held video game controllers, and low power fan motors.| Part No. | A1442 |
|---|---|
| Datasheet | A1442 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Low Voltage Full Bridge Brushless DC Motor Driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Low voltage operation● Reverse voltage protection on VDD and S¯¯L¯¯E¯¯E¯¯P pins
● Output short circuit and thermal shutdown protections
● Soft switching algorithm to reduce audible switching noise and EMI interference
● Unidirectional working mode provides motor rotation in one direction
● Hall chopper stabilization technique for precise signal response over operating range
● Sleep mode pin allowing external logic signal enable/ disable to reduce average power consumption
● Antistall feature guarantees continuous rotation
● Low current consumption sleep mode
● Single-chip solution for high reliability
● Miniature MLP/DFN package Package: 6 pin MLP/DFN (suffix EW) 1.5 mm × 2 mm, 0.40 mm maximum overall height Approximate scale
DESCRIPTION
Commutation of the motor is achieved by use of a single Hall element to detect the rotational position of an alternating-pole ring magnet. A high-density CMOS semiconductor process allows the integration of all the necessary electronics.
