MAX6650和 MAX6651可以为你的系统冷却风扇提供必要的控制。这些高集程度的芯片具有标准的I~2C~(TM)/SMBus 兼容接口,通过一只外接的功率 FET 调节冷却风扇的直流端电压,采用风扇的转速计作为速度反馈。这样,既实现了精确的转速控制,又省去了复杂的风扇启动算法或包括多个晶体管的驱动放大器。这些风扇控制器同时还监视风扇的工作状态,当风扇出现故障时发出中断。MAX6654 可以控制和监视单台 The MAX6650 and MAX6651 provide the necessary controls for your system cooling fans. These high-level chips have a standard I / 2C / SMBus-compatible interface that regulates the DC side of the cooling fan with an external power FET and uses a fan tachometer as a speed feedback. This allows for both accurate speed control and complex fan-start algorithms or driver amplifiers with multiple transistors. These fan controllers also monitor the operating status of the fan and give an interrupt when the fan fails. The MAX6654 controls and monitors a single unit