Features: 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 sizeSpecificationsSupply Voltage, VDD................................................5.0 V
Reverse Battery Voltage, VRDD............................ 0.3 V
Output Voltage, VOUT ..................0.3 V to VDD + 0.3 V
Control Input Voltage,VIN(High) ...0.3 V to VDD + 0.3 V
Load Current*, ILOAD .......................................±150 mA
Magnetic Flux Density, B ................................... Unlimited
Operating Temperature
Ambient, TA, Range S ................................20ºC to 85ºC
Maximum Junction, TJ(max)...................................... 165ºC
Storage Temperature, TS .........................65ºC to 170ºCDescriptionThe 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 A1441 package, eliminating the need for any external support components.
A micropower sleep mode can be enabled by an external signal, to reduce current consumption for battery management in portable electronic devices. In addition, the A1441 offers an active function for motor braking.
The A1441 is optimized for vibration motor applications such as cellular phones, pagers, electronic toothbrushes, and hand-held video game controllers. A1441 also drive low power fan motors designed with cogging plates.
The small package outline and low profile make A1441 ideally suited for use in applications where printed circuit board area and component headroom are at a premium. A1441 is available in a lead (Pb) free (leadframe plating 100% matte tin) 6-pin MLP microleadframe package for surface mount, with exposed pad for enhanced thermal dissipation.
A1441 Data Sheet
