Datasheet > ADT7475

ADT7475

更新时间： 2024-11-23 08:20:23

品牌	Logo	应用领域
安森美 - ONSEMI		风扇监控控制器
页数	文件大小	规格书
58页	620K
描述
dbCOOL Remote Thermal Monitor and Fan Controller

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ADT7475 数据手册

ADT7475

dbCOOLt Remote Thermal

Monitor and Fan Controller

The ADT7475 dbCOOL controller is a thermal monitor and

multiple PWM fan controller for noise−sensitive or power−sensitive

applications requiring active system cooling. The ADT7475 can drive

a fan using either a low or high frequency drive signal, monitor the

temperature of up to two remote sensor diodes plus its own internal

temperature, and measure and control the speed of up to four fans so

that they operate at the lowest possible speed for minimum acoustic

noise.

http://onsemi.com

MARKING

DIAGRAM

The automatic fan speed control loop optimizes fan speed for a

given temperature. The effectiveness of the system’s thermal solution

can be monitored using the THERM input. The ADT7475 also

provides critical thermal protection to the system using the

bidirectional THERM pin as an output to prevent system or

component overheating.

ADT7475

ARQZ

#YYWW

QSOP−16

CASE 492

Features

= Pb−Free Package

• Controls and Monitors Up to 4 Fans

YYWW = Date Code

• High and Low Frequency Fan Drive Signal

• 1 On−Chip and 2 Remote Temperature Sensors

• Extended Temperature Measurement Range, Up to 191°C

• Automatic Fan Speed Control Mode Controls System Cooling Based

on Measured Temperature

PIN ASSIGNMENT

SCL

16 SDA

15 PWM1/XTO

• Enhanced Acoustic Mode Dramatically Reduces User Perception of

Changing Fan Speeds

GND

CCP

• Thermal Protection Feature via THERM Output

• Monitors Performance Impact of Intel Pentium^R4 Processor

• Thermal Control Circuit via THERM Input

• 3−Wire and 4−Wire Fan Speed Measurement

• Limit Comparison of All Monitored Values

TACH3

D1+

ADT7475

PWM2/

SMBALERT

TOP VIEW

12 D1–

11 D2+

10 D2–

TACH1

TACH2

TACH4/GPIO/THERM

SMBALERT

PWM3

• Meets SMBus 2.0 Electrical Specifications

(Fully SMBus 1.1 Compliant)

• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS

Compliant

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 57 of this data sheet.

Publication Order Number:

October, 2011 − Rev. 5

ADT7475/D

12 3 4 5 6 7...58

中文翻译

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与ADT7475相关器件

型号	品牌	获取价格	描述	数据表
ADT7475_1110	ONSEMI	获取价格	dbCOOL Remote Thermal Monitor and Fan Controller
ADT7475_13	ONSEMI	获取价格	Remote Thermal Monitor and Fan Controller
ADT7475_18	ONSEMI	获取价格	Remote Thermal Monitor and Fan Controller
ADT7475ARQ	ADI	获取价格	ADT7475ARQ
ADT7475ARQ-REEL	ADI	获取价格	ADT7475ARQ-REEL
ADT7475ARQ-REEL7	ADI	获取价格	ADT7475ARQ-REEL7
ADT7475ARQZ	ONSEMI	获取价格	dBCOOL Remote Thermal Monitor and Fan Controller
ADT7475ARQZ	ADI	获取价格	dBCool Remote Thermal Monitor and Fan Controller
ADT7475ARQZ-REEL	ADI	获取价格	dBCool Remote Thermal Monitor and Fan Controller
ADT7475ARQZ-REEL	ONSEMI	获取价格	dBCOOL Remote Thermal Monitor and Fan Controller

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