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High-Performance Power ICs and Hall-Effect Sensors
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A1441: Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation (PDF)
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BLDC Motor Drivers with Integrated Hall for Commutation
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A1441: Low-Voltage Full-Bridge Brushless DC Motor Driver with Hall Element Commutation
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A1441: Allegro MicroSystems, Inc. Introduces Full-Bridge Motor Driver, Providing Integration of Hall Element and Motor Control Circuitry
A1441 Datasheet Addendum (PDF)
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FAQs - A1441: Low-Voltage Full-Bridge Brushless DC
Motor Driver with Hall Element Commutation 
Q1: What happens to the device if it is operated above max Vcc?
Q2: What happens to the device if it is operated below -20°C or above +85°C?
Q3: How do the active braking feature and sleep function work?
Q4: Can Vcc and Sleep be tied together and toggled to conserve power?
Q6: What happens if Sleep is left floating?
Q7: What happens if a negative voltage is applied to Vcc?
Q8: How can I control the speed of the motor?
Q1 - What happens to the device if it is operated above max Vcc?
Device may become permanently damaged.
Q2 - What happens to the device if it is operated below -20°C or above +85°C?
Operational parameters may drift out of specification causing variation in motor commutation.
Q3 - How do the active braking feature and sleep function work?
The braking feature is enabled when Vcc is high and the sleep pin is pulled to ground. The braking feature reverses the current in the motor for approximately 100 mS before the device goes into sleep mode.
Can Vcc and Sleep be tied together and toggled to conserve power?
Yes. This will turn the motor on and off allowing the motor rotation to stop naturally due to friction.
What happens if Vcc is toggled and results in a potential that is higher than Sleep for a short duration?
There are no issues with the voltage being higher on either sleep or Vcc as long as they do not exceed the maximum specified voltage.
What happens if Sleep is left floating?
SLEEP pin is a logical input, so leaving it floating would result in random behavior. The sleep pin must be pulled high or low in order for the devices to operate properly. The sleep pin cannot be left floating.
What happens if a negative voltage is applied to Vcc?
The body diodes on the H-bridge become forward biased, at an approximately -1.1 V the device will be permanently damaged.
How can I control the speed of the motor?
Varying Vcc will change the motor speed, being careful not to exceed the maximum operating voltage.