MAX1669 - 风扇控制器及远端温度传感器，带有SMBus串行接口

MAX1669是Maxim美信半导体公司的一款传感器与传感器接口产品，MAX1669是风扇控制器及远端温度传感器，带有SMBus串行接口，本站介绍了MAX1669的封装应用图解、特点和优点、功能等，并给出了与MAX1669相关的Maxim元器件型号供参考。

MAX1669 - 风扇控制器及远端温度传感器，带有SMBus串行接口 - 传感器与传感器接口 - 业内首款可提供PWM、线性风扇控制的温度传感器 - 美信半导体

产品概述

The MAX1669 fan controller includes a precise digital thermometer that reports the temperature of a remote sensor. The remote sensor is a diode-connected transistor-typically a low-cost, easily mounted 2N3906 PNP type-replacing conventional thermistors or thermocouples. Remote accuracy is ±3°C for transistors from multiple manufacturers, with no calibration needed. The MAX1669 has an independent fan controller with a low-current logic output requiring external power components to interface to a DC brushless fan. The fan controller has two modes of operation: a low-frequency (20Hz to 160Hz) PWM mode intended for driving the fan motor, or a high-impedance DAC output that generates a variable DC control voltage. In PWM mode, the FAN frequency can be synchronized to an external clock.

Other key features include general-purpose inputs/outputs (GPIOs) for fan presence detection and a thermostat output intended as a fan override signal in case the host system loses the ability to communicate. The internal ADC has a wide input voltage range and gives overrange readings when too large an input voltage is applied. Other error-checking includes temperature out-of-range indication and diode open/short faults.

The MAX1669 is available in a space-saving 16-pin QSOP package that allows it to fit adjacent to the SLOT1 connector.

关键特性

以下关键特性由Maxim美信半导体提供：

Measures Remote CPU Temperature

No Calibration Required

20Hz to 160Hz PWM Output for Fan

PWM Frequency Sync Input (260kHz)

Flexible Fan Interface: Linear or PWM

SMBus 2-Wire Serial Interface

Programmable Under/Overtemperature Alarms

ALERT-bar Latched Interrupt Output

OVERT-bar Thermostat Output

Two GPIO Pins

Write-Once Configuration Protection

Supports SMBus Alert Response

±3°C Temperature Accuracy (-40°C to +125°C, remote)

3µA Standby Supply Current

+3V to +5.5V Supply Range

Small 16-Pin QSOP Package

Remote diode sensor, PWM and linear fan control, dual alarms

热门应用

计算机：台式机、工作站和服务器

笔记本电脑

Pentium® CPU冷却装置

服务器

工作站

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