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Dual DMOS Full Bridge Motor Driver IC

Dual DMOS Full Bridge Motor Driver IC

Allegro MicroSystems Inc.'s dual DMOS full bridge motor driver IC is targeted at the office automation and consumer and industrial markets. Designed for pulse width modulated (PWM) control of two dc motors, the A4954 is capable of peak output currents to plus or minus 2 A and operating voltages to 40V. Integrated charge pump capacitors reduce external component cost and count.

Input terminals are provided for use in controlling the speed and direction of a dc motor with externally applied PWM control signals. Internal synchronous rectification control circuitry is provided to lower power dissipation during PWM operation. Internal circuit protection includes overcurrent protection, motor lead short to ground or supply, thermal shutdown with hysteresis, undervoltage monitoring of VBB, and crossover current protection.

The A4954ELPTR-T is provided in a low-profile 16-pin TSSOP package with exposed thermal pad (suffix LP) that is lead (Pb) free, with 100 percent matte tin lead frame plating. It is priced at $1.37 in quantities of 1,000.

Dual DMOS Full Bridge Motor Driver IC
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