MAX6650

风扇转速调节器和监控器,带有SMBus™/I²C兼容接口

风扇速度控制、监控电路,实现高性能热管理


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说明

The MAX6650/MAX6651 fan controllers use an SMBus/I²C-compatible interface to regulate and monitor the speed of 5VDC/12VDC brushless fans with built-in tachometers. They automatically force the fan's tachometer frequency (fan speed) to match a preprogrammed value in the Fan-Speed Register by using an external MOSFET or bipolar transistor to linearly regulate the voltage across the fan. The MAX6650 regulates the speed of a single fan by monitoring its tachometer output. The MAX6651 also regulates the speed of a single fan, but it contains additional tachometer inputs to monitor up to four fans and control them as a single unit when they are used in parallel.

The MAX6650/MAX6651 provide general-purpose input/output (GPIO) pins that serve as digital inputs, digital outputs, or various hardware interfaces. Capable of sinking 10mA, these open-drain inputs/outputs can drive an LED. To add additional hardware control, configure GPIO1 to fully turn on the fan in case of software failure. To generate an interrupt when a fault condition is detected, configure GPIO0 to behave as an active-low alert output. Synchronize multiple devices by setting GPIO2 (MAX6651 only) as an internal clock output or an external clock input.

The MAX6650 is available in a space-saving 10-pin µMAX® package, and the MAX6651 is available in a small 16-pin QSOP package.
MAX6650、MAX6651:典型工作电路 MAX6650、MAX6651:典型工作电路 放大+

关键特性

  • Closed/Open-Loop Fan-Speed Control for 5V/12V Fans
  • 2-Wire SMBus/I²C-Compatible Interface
  • Monitors Tachometer Output
    • Single Tachometer (MAX6650)
    • Up to Four Tachometers (MAX6651)
  • Programmable Alert Output
  • GPIOs
  • Hardware Full-On Override
  • Synchronize Multiple Fans
  • Four Selectable Slave Addresses
  • 3V to 5.5V Supply Voltage
  • Small Packages
    • 10-Pin µMAX (MAX6650)
    • 16-Pin QSOP (MAX6651)

应用

  • 计算机:台式机、工作站和服务器
  • 网络
  • RAID
  • 服务器
  • 电信
  • 工作站

请查看具体的参数规格 Fan Controllers (20)


Part NumberFan ControlInterfacePackage/PinsBudgetary
Price
See Notes
MAX6650 Linear2-Wire/I2C/SMBus
UMAX/10
$2.68 @1k
MAX6651 
QSOP/16
$2.74 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。

MAX6651EVCMAXQU: MAX6651评估板/评估系统
MAX6651EVKIT: MAX6651评估板/评估系统
产品可靠性报告: MAX6650.pdf 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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