DC Brushless Motor Drivers for Cooling Fans

Fan motors are being increasingly used in high performance, high speed electronic devices such as PCs, gaming consoles and AV/office equipment. ROHM's DC brushless fan motor drivers meet the stringent demands of even the most sophisticated products by featuring the latest technologies, including MOS output drives for large airflow and soft switching functionality in order to reduce electromagnetic noise, while multiple built-in protection circuits ensure the utmost in reliability.

Broad Lineup DC Brushless Motor Drivers for Cooling Fans

| Low-voltage Signal-phase Full-wave DC Brushless Fan Motor Drivers | Standard Signal-phase Full-wave DC Brushless Fan Motor Drivers | Multifunction Speed Controllable Signal-phase Full-wave DC Brushless Fan Motor Drivers | Two-phase Half-wave DC Brushless Fan Motor Drivers | Three-phase Full-wave DC Brushless Fan Motor Drivers |

Low-voltage Signal-phase Full-wave DC Brushless Fan Motor Drivers Soft switching drive ensure silent operation Direct PWM speed control input reduces the number of parts required Compact package reduces mounting area	Standard Signal-phase Full-wave DC Brushless Fan Motor Drivers Speed control by direct PWM control Soft switching drive ensure silent operation 24V power supply compatibility(BA6423AF、BA6424AFS)

Multifunction Speed Controllable Signal-phase Full-wave DC Brushless Fan Motor Drivers Soft switching drive ensure silent operation Added pre-driver corresponds to large current(BD6722FS) Current limit circuit, soft start function	Two-phase Half-wave DC Brushless Fan Motor Drivers MOS output for high power with low power consumption Output voltage clamp circuit(BD6701F) Lock-up protection circuit

Three-phase Full-wave DC Brushless Fan Motor Drivers Direct 150°power PWM system Low power consumption Built-in rotor location detection function ensures stable start up