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LB11972V - 3-Phase Sensorless Motor Driver

Description

Pin No.

24 1 2 23 Pin Symbol UOUT VOUT W OUT RF Minimum potential of drum motor driver output transistor.

Constant current control is made by detecting this voltage.

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Full PDF Text Transcription

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Ordering number : ENN8797 Monolithic Digital IC LB11972V Overview 3-Phase Sensorless Motor Driver for Fan Motor Driver for Refrigerator The LB11972V is a 3-phase full-wave current linear sensorless motor driver. It is optimal for refrigerator fan motor drive. Functions • Three-phase sensor-less motor driver • Current linear drive • Built-in current limiting circuit • Built-in output stage saturation preventive circuit • With coil counter-electromotive FG output • Built-in thermal shutdown circuit • Built-in beat lock preventive circuit Specitications Absolute Maximum Ratings at Ta = 25°C Parameter Supply voltage Output application voltage Input application voltage Output current Internal allowable loss Symbol Operating temperature Storage temperature * Specified board (114.3×76.
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