ADM1033ARQZ-REEL データシートの表示（PDF） - ON Semiconductor

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ADM1033ARQZ-REEL

Thermal Monitor and Fan Speed (RPM) Controller

ON Semiconductor 

ADM1033

Thermal Monitor and Fan

Speed (RPM) Controller

The ADM1033 is a one channel remote− and local−temperature

sensor and fan controller. The remote channel monitors the

temperature of the remote thermal diode, which may be discrete

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

monitors its own ambient temperature.

The ADM1033 can monitor and control the speed of cooling fan.

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 ADM1033 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 Remote Temperature Channels

• ±1°C Accuracy on Local and Remote Channels

• Automatic Remote Temperature Channel, 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

http://onsemi.com

QSOP−16

CASE 492

MARKING DIAGRAM

1

1033A

RQZ

#YYWW

xxx = Specific Device Code

#

= Pb−Free Package

YY = Date Code

WW = Work Week

PIN ASSIGNMENT

DRIVE1 1

TACH1 2

ALERT Comp 3

NC 4

GND 5

VCC 6

THERM 7

FAN_FAULT/REF 8

ADM1033

16 SCL

15 SDA

14 ALERT

13 LOCATION

12 NC

11 NC

10 D1+

9 D1−

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 34 of this data sheet.

© Semiconductor Components Industries, LLC, 2010

1

July, 2010 − Rev. 2

Publication Order Number:

ADM1033/D

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