The A8925CEB is a DMOS three-phase brushless dc motor controller/driver designed for use in Winchester disk drives and other data storage applications. The power output stages are capable of 4 A output currents and have DMOS power outputs with less than 0.25 rDS(on) for low power dissipation. Intrinsic ground clamp and flyback diodes protect the output drivers when switching inductive loads. Thermal shutdown circuitry is provided to protect the device from excessive junction temperature.