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ADM1034ARQZ-REEL Folha de dados(PDF) 1 Page - ON Semiconductor

Nome de Peças ADM1034ARQZ-REEL
Descrição Electrónicos  Thermal Monitor and Fan Speed (RPM) Controller
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Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2009
July, 2009 − Rev. 3
1
Publication Order Number:
ADM1034/D
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
http://onsemi.com
PIN ASSIGNMENT
(Top View)
1
2
3
4
5
6
7
8
14
13
12
11
10
9
TACH1
DRIVE2
TACH2
THERM
VCC
GND
DRIVE1
SDA
LOCATION
D2–
D2+
SCL
ADM1034
FAN_FAULT/REF
ALERT
D1−
D1+
16
15
See detailed ordering and shipping information in the package
dimensions section on page 38 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAM
#
= Pb−Free Package
YYWW = Date Code
1034A
RQZ
#YYWW
QSOP−16
CASE 492


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