Fairchild Semiconductor International (San Jose, CA) introduced two new dc cooling fan motor drive ICs to its growing product portfolio of motor ICs. The FAN8404D and the FAN8408D are two-phase, half-wave motor drive ICs that provide an optimum high-efficiency solution for cooling fan motors found in PC, game console and test equipment applications.
The FAN8404D and the FAN8408D are capable of sinking 1.2A of motor load current, while requiring just 2.2mA of typical supply current in standby. The motor drive ICs offer a low-cost alternative to similar products and enhance system reliability through thermal shutdown, lock detection and auto-restart, while reducing system power consumption. The two ICs present a choice of motor lock detection options, with the FAN8408D featuring Hall output for motor speed detection and the FAN8404D offering an alarm output to signal fan lockup.
The FAN8404D and the FAN8408D provide a wide range of operating voltages (from 4V to 15V). Motor lock detection and auto restart functions are integrated on the devices. The timing of lock detection and auto restart is
controlled by an external capacitor connected to the lock detection pin. Built-in thermal shutdown circuits and a reverse-current protection diode are also featured. Both the FAN8404D and the FAN8408D are offered in an eight-SOP package. Upon special request, an eight-MSOP package is also available.
Available now, the devices are priced at $0.25 for 1,000 pieces. Lead-time is eight weeks ARO for production quantities.
