MAX31785ETL

更新时间： 2024-11-05 11:17:47

品牌	Logo	应用领域
美信 - MAXIM		风扇控制器
页数	文件大小	规格书
48页	1243K
描述
6-Channel Intelligent Fan Controller

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MAX31785ETL 数据手册

19-5703; Rev 0; 12/10

6-Channel Intelligent Fan Controller

General Description

Features

S Six Independent Channels of Fan Control

The MAX31785 is a closed-loop multichannel fan con-

troller. Automatic closed-loop fan control saves system

power by operating the fans at the lowest possible

speeds. Added benefits of slower fan speeds include

lower audible noise, longer fan life, and reduced system

maintenance. Based on a user-programmable lookup

table (LUT), the device automatically adjusts the speeds

of the six independent fans based on one or more of the

11 available temperature sensors. Alternately, an exter-

nal host can manually command the fan speeds and the

device automatically adjusts the fan speeds. The device

contains a fan-health-diagnostic function to help users

predict impending fan failures. The device can also

monitor up to six remote voltages.

Supports 3-Wire and 4-Wire Fans

Automatic Closed-Loop Fan Speed Control

RPM- or PWM-Based Control

Optional Manual Mode Control

Fast and Slow PWM Frequency Options

Staggered Fan Spin-Up Eases Power-Supply

Stress

Dual Tachometer (12-Fan Support)

Fan-Fault Detection

Fan-Health Status Meter

Nonvolatile Fan Operating Run Time Meter

S Supports Up to 11 Temperature Sensors

Up to Six External Thermal Diodes with

Automatic Series Resistance Cancellation

One Internal Temperature Sensor

Applications

Network Switches/Routers

Base Stations

Up to Four I C Digital Temperature Sensors

Fault Detection on All Temperature Sensors

S Available 6-Channel ADC to Measure Remote

Servers

Voltages

Smart Grid Network Systems

Industrial Controls

S PMBus™-Compliant Command Interface

S I C/SMBus™-Compatible Serial Bus with Bus

Timeout Function

Ordering Information

S On-Board Nonvolatile Fault Logging and Default

PART

TEMP RANGE

-40NC to +85NC

PIN-PACKAGE

40 TQFN-EP*

Configuration Setting

MAX31785ETL+

MAX31785ETL+T

S No External Clocking Required

S +3.3V Supply Voltage

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

*EP = Exposed pad.

PMBus is a trademark of SMIF, Inc.

SMBus is a trademark of Intel Corp.

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, go to: www.maxim-ic.com/errata.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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与MAX31785ETL相关器件

型号	品牌	获取价格	描述	数据表
MAX31785ETL+	MAXIM	获取价格	Analog Circuit, 1 Func, 6 X 6 MM, ROHS COMPLIANT, TQFN-40
MAX31790	MAXIM	获取价格	6-Channel PWM-Output Fan RPM Controller
MAX31790	ADI	获取价格	6通道、PWM输出、风扇RPM控制器
MAX31790ATI+	MAXIM	获取价格	6-Channel PWM-Output Fan RPM Controller
MAX31790ATI+T	MAXIM	获取价格	6-Channel PWM-Output Fan RPM Controller
MAX317C/D	MAXIM	获取价格	Precision, CMOS Analog Switches
MAX317CJA	MAXIM	获取价格	Precision, CMOS Analog Switches
MAX317CPA	MAXIM	获取价格	Precision, CMOS Analog Switches
MAX317CSA	MAXIM	获取价格	Precision, CMOS Analog Switches
MAX317EJA	MAXIM	获取价格	Precision, CMOS Analog Switches

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