LV8814J-AH

Triple Half Bridge Motor Driver 20Pin SSOP T/R

The LV8814J is a 3-phase BLDC motor driver which is controlled by single Hall sensor. A 180 degrees sinusoidal driving method is adopted and the IC can control motor with low vibration and the low noise. In addition, lead-angle adjustment is possible by an external pin. Lead-angle value and lead-angle slant can be adjusted independently. Thus, the device can be driven by high efficiency and low noise with various motors. The power element to drive a motor is built-in and contributes to high efficiency by low on resistance 0.5 Ω. The Hall sensor bias driver is equipped, and a Hall IC is supported as well. As a method of the rotary speed control of the motor, direct-PWM pulse input or DC-voltage input can be chosen.

Features |   | Benefits

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3-phase full wave sinusoidal drive

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Static sound, low vibration, high efficiency

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Any practical combination of slot and pole can be handled. e.g. 3S3P, 3S4P, 6S4P, 6S8P, 12S8P, 9S12P and so on

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Versatility

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built-in power FETs P-MOS/N-MOS

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Part mark reduction. The implementation area small

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Speed control function by direct PWM or DC voltage input

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Speed control is possible by two methods.selectable

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Minimum input PWM duty cycle can be configured by voltage input

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It is contributed to movement stability

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Soft start-up function and soft shutdown function

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It is contributed to static sound characteristics at the time of the start

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Soft PWM duty cycle transitions

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Static sound characteristics at the time of the speed abnormality are good

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Built-in current limit circuit and thermal protection circuit

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Safe use is provided by a protection function

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Regulated voltage output pin for Hall sensor bias

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A PCB design is easy

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Built-in locked rotor protection and auto recovery circuit

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Safe use is provided by a protection function

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FG signal output

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A measurement of the number of revolutions is possible

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Dynamic lead angle adjustment with respect to rotational speed

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High efficiency

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Lead-angle control parameters can be configured by voltage inputs

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High efficiency