The A1441 is a full-bridge motor driver designed to drive low-voltage bipolar brushless dc motors. Commutation of the motor is achieved by use of a single Hall element sensor to detect the position of an alternating-pole ring magnet. A high density merged Bipolar-CMOS semiconductor process allows the integration of the Hall element on the same IC as the motor control circuitry, providing a single-chip solution for enhanced reliability. All necessary circuitry is incorporated within the device package, eliminating the need for any external support components.

FEATUREs and Benefits
■ Single-chip solution for high reliability
■ Chopper stabilization technique for precise signal response over operating range
■ 2.0 to 4.0 V operation
■ Sleep mode pin allowing external logic signal enable/disable to reduce average power consumption
■ Restart feature
■ Small package size