ADT7463_13 datasheet(1/50 Pages) ONSEMI

Part #	ADT7463

Description	Remote Thermal Controller and Voltage Monitor

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Manufacturer	ONSEMI [ON Semiconductor]

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May, 2013 − Rev. 7

1

Publication Order Number:

ADT7463/D

ADT7463

Remote Thermal Controller

and Voltage Monitor

The ADT7463 controller is a complete systems monitor and

multiple PWM fan controller for noise−sensitive applications

requiring active system cooling. It can monitor 12 V, 5 V, and 2.5 V

CPU supply voltages, plus its own supply voltage. 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 TMIN control mode enables the

system thermals/acoustics to be intelligently managed. The

effectiveness of the system’s thermal solution can be monitored using

the THERM input. The ADT7463 also provides critical thermal

protection to the system using the bidirectional THERM pin as an

output to prevent system or component overheating.

Features

• Monitors Up to 5 Supply Voltages

• Controls and Monitors up to 4 Fan Speeds

• 1 On−Chip and 2 Remote Temperature Sensors

• Monitors Up to 6 Processor VID Bits

• Dynamic TMIN Control Mode Optimizes System Acoustics

Intelligently

• Automatic Fan Speed Control Mode Controls System Cooling Based

on Measured Temperature

• Enhanced Acoustic Mode Dramatically Reduces User Perception of

Changing Fan Speeds

• Thermal Protection Feature via THERM Output

• Monitors Performance Impact of Intel® Pentium® 4 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

(Fully SMBus 1.1 Compliant)

• This is a Pb−Free Device

Applications

• Low Acoustic Noise PCs

• Networking and Telecommunications Equipment

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 49 of this data sheet.

ORDERING INFORMATION

MARKING DIAGRAM

PIN ASSIGNMENT

QSOP24 NB

CASE 492B

ADT7463ARQZ = Specific Device Code

#

= Pb−Free Package

YY

= Date Code

WW

= Work Week

+2.5VIN/

SMBALERT

PWM1/XTO

VCCP

+12VIN/VID5

+5VIN/THERM

D1+

TACH4/ADDR

SELECT/THERM

VID4

SDA

SCL

GND

VCC

VID0

VID1

VID2

PWM2/

SMBALERT

24

23

22

21

20

19

18

17

8

7

6

5

4

3

2

1

ADT7463

(Top View)

ADT7463A

RQZ#YYWW

16

9

15

10

14

11

13

12

VID3

TACH3

TACH1

TACH2

D1−

D2+

D2−

PWM3/ADDRESS

ENABLE

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