ADT7460ARQZ-RL7 ONSEMI [ON Semiconductor], ADT7460ARQZ-RL7 Datasheet

ADT7460ARQZ-RL7

Manufacturer Part Number

ADT7460ARQZ-RL7

Description

dBCOOL Remote Thermal Monitor and Fan Controller

Manufacturer

ONSEMI [ON Semiconductor]

Datasheet

1.ADT7460ARQZ-RL7.pdf (46 pages)

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ADT7460

dBCOOL

Monitor and Fan Controller

multiple PWM fan controller for noise−sensitive applications

requiring active system cooling. It can monitor the temperature of up

to two remote sensor diodes plus its own internal temperature. It can

measure and control the speed of up to four fans so that they operate at

the lowest possible speed for minimum acoustic noise. The automatic

fan speed control loop optimizes fan speed for a given temperature. A

unique dynamic T

thermals/acoustics to be intelligently managed. The effectiveness of

the system’s thermal solution can be monitored using the THERM

input. The ADT7460 also provides critical thermal protection to the

system by using the bidirectional THERM pin as an output to prevent

system or component overheating.

Features

•

APPLICATIONS

•

June, 2010 − Rev. 5

The ADT7460 dBCOOL controller is a thermal monitor and

Intelligently

Based on Measured Temperature

of Changing Fan Speeds

(Fully SMBus 1.1−Compliant)

Controls and Monitors Up to 4 Fans

1 On−Chip and 2 Remote Temperature Sensors

Dynamic T

Automatic Fan Speed Control Mode Controls System Cooling

Enhanced Acoustic Mode Dramatically Reduces User Perception

Thermal Protection Feature via THERM Output

Monitors Performance Impact of Intel Pentium

Processor Thermal Control Circuit via THERM Input

2−Wire and 3−Wire Fan Speed Measurement

Limit Comparison of All Monitored Values

Meets SMBus 2.0 Electrical Specifications

This is a Pb−Free Device

Low Acoustic Noise PCs

Networking and Telecommunications Equipment

MIN

Control Mode Optimizes System Acoustics

MIN

Remote Thermal

control mode enables the system

4 Processor

See detailed ordering and shipping information in the package

dimensions section on page 45 of this data sheet.

ADDR ENABLE

SMBALERT

PWM2/

TACH3

TACH1

TACH2

PWM3/

ORDERING INFORMATION

xxx

YYWW = Date Code

GND

SCL

CASE 492

QSOP−16

http://onsemi.com

PIN ASSIGNMENT

= Device Code

= Pb−Free Package

ADT7460

TOP VIEW

Publication Order Number:

MARKING

DIAGRAM

SDA

PWM1/XTO

D1+

D1–

D2+

D2–

/THERM

TACH4/ADDR SELECT

#YYWW

CCP

T7460A

RQZ

ADT7460/D

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