The L8150 device is a motor predriver intended to drive brushless fan motors with Hall effect sensors. The device, realized in BCD5 0.6mm mixed technology, is characterized by a mostly digital architecture assuring high integration density and high test coverage. The L8150 with few external components forms a complete control circuit, since the smooth driver logic is fully integrated: its peculiar driving solution (smooth driving) allows a very low current ripple and speed control even at low rotation speeds.