max6650, max6651 风扇速度控制、监控电路,实现高性能热管理,带有smbus™/i²c兼容接口
max6650, max6651 概述
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 pdf datasheet
max6650, max6651 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/使用
计算机:台式机、工作站、服务器
网络
raid
服务器
电信
工作站
max6650/max6651应用电路
自压缩神经网络
2018年第二季手机出货量:华为超越了苹果,取得了阶段性胜利
双层PCB线路板和普通的PCB线路板有何区别
MiniLED显示屏怎么样,它省电吗
麦芒8在发布两个月后推出全新配色——极光蓝配色
MAX6650, MAX6651 风扇速度控制、监控电路,实
NI 位列全球最佳跨国公司前十名
消除AC驱动器的8个常见误区
高微步步进电机驱动IC TB67S128FTG介绍
上海轨道交通明年突破800公里!保持全球第一
DRAM发展凭借大基金和挖角就够?
智能锁渗透率提升大 技术与渠道力领先企业有望脱颖而出
Cookie数据是如何移动的?
发动机动力不足的故障诊断与排除
小米电视PLM项目案例分享
华为为菲律宾互联网供应商ISP,提供了广域网解决方案
研究人员开发出可以用于执行特定任务而自动改变形状的特种机器人
人工智能的10大风口 如何紧紧抓住
什么是良好的物联网连接性?
比特币核心开发人员发现比特大陆的S15的固件存在安全漏洞