ADM1034ARQZ-REEL(2012) Просмотр технического описания (PDF) - ON Semiconductor

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ADM1034ARQZ-REEL
(Rev.:2012)

Thermal Monitor and Fan Speed (RPM) Controller

ON Semiconductor 

ADM1034

Thermal Monitor and Fan

Speed (RPM) Controller

The ADM1034 is a dual-channel remote- and local-temperature

sensor and fan controller. The remote channels monitor the

temperature of two remote thermal diodes, which may be discrete

2N3904/6s or may be located on a microprocessor die. The device also

monitors its own ambient temperature.

The ADM1034 can monitor and control the speed of two cooling

fans. The user can program a target fan speed, or else use the look-up

table to input a temperature-to-fan speed profile. The look-up table

can be configured to run the fans at discrete speeds (discrete mode) or

to ramp the fan speed with temperature (linear mode).

The ADM1034 communicates over a 2-wire SMBus 2.0 interface.

An 8-level LOCATION input allows the user to choose between

SMBus 1.1 and SMBus 2.0. An ALERT output indicates error

conditions. The THERM I/O signals overtemperature as an output and

times THERM assertions as an input. Pin 8 can be configured as a

reference for the THERM (PROCHOT) input.

Features

 1 Local and 2 Remote Temperature Channels

 1C Accuracy on Local and Remote Channels

 Automatic Remote Temperature Channels, Up to 1 kW

 Fast (Up to 64 Measurements per Second)

 SMBus 2.0, 1.1, and 1.0 Compliant

 SMBus Address Input/LOCATION Input to UDID

 Programmable Over/Undertemperature Limits

 Programmable Fault Queue

 SMBusALERT Output

 Fail-Safe Overtemperature Comparator Output

 Fan Speed (RPM) Controller

 Look-up Table for Temperature-to-Fan Speed Control

 Linear and Discrete Options for Look-up Table

 FAN_FAULT Output

 THERM Input, Used to Time PROCHOT Assertions

 REF Input, Used as Reference for THERM (PROCHOT)

 3.0 V to 5.5 V Supply

 Small 16-lead QSOP Package

 This is a Pb-Free Device*

Applications

 Desktop and Notebook PCs

 Embedded Systems

 Telecommunications Equipment

 LCD Projectors

* For additional information on our Pb-Free strategy and soldering details, please

download the ON Semiconductor Soldering and Mounting Techniques

Reference Manual, SOLDERRM/D.

 Semiconductor Components Industries, LLC, 2012

1

April, 2012 − Rev. 4

http://onsemi.com

QSOP−16

CASE 492

PIN ASSIGNMENT

DRIVE1 1

TACH1 2

DRIVE2 3

TACH2 4

GND 5

VCC 6

THERM 7

FAN_FAULT/REF 8

ADM1034

16 SCL

15 SDA

14 ALERT

13 LOCATION

12 D2+

11 D2−

10 D1+

9 D1−

(Top View)

MARKING DIAGRAM

1034A

RQZ

#YYWW

1034ARQZ = Specific Device Code

#

= Pb-Free Package

YY

= Date Code

WW

= Work Week

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 37 of this data sheet.

Publication Order Number:

ADM1034/D

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