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ADM1031ARQZ-REEL

更新时间: 2024-02-19 20:33:37
品牌 Logo 应用领域
安森美 - ONSEMI 风扇传感器换能器温度传感器监控控制器
页数 文件大小 规格书
30页 294K
描述
Intelligent Temperature Monitor and Dual PWM Fan Controller

ADM1031ARQZ-REEL 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:ActiveReach Compliance Code:unknown
风险等级:5.28最大精度(摄氏度):3 Cel
主体宽度:3.91 mm主体高度:1.55 mm
主体长度或直径:4.9 mm外壳:PLASTIC
JESD-609代码:e3安装特点:SURFACE MOUNT
位数:8最大工作电流:3 mA
最高工作温度:100 °C最低工作温度:
输出接口类型:2-WIRE INTERFACE封装形状/形式:RECTANGULAR
传感器/换能器类型:TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL最大供电电压:5.5 V
最小供电电压:3 V表面贴装:YES
端子面层:MATTE TIN端接类型:SOLDER
Base Number Matches:1

ADM1031ARQZ-REEL 数据手册

 浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第2页浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第3页浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第4页浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第5页浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第6页浏览型号ADM1031ARQZ-REEL的Datasheet PDF文件第7页 
ADM1031  
Intelligent Temperature  
Monitor and Dual PWM Fan  
Controller  
The ADM1031 is an ACPIcompliant, threechannel digital  
thermometer and under/overtemperature alarm for use in personal  
computers and thermal management systems. Optimized for the  
PentiumRIII, the part offers a 1°C higher accuracy, which allows  
system designers to safely reduce temperature guardbanding and  
increase system performance.  
http://onsemi.com  
QSOP16  
Two PWM fan control outputs control the speed of two cooling fans  
by varying output duty cycle. Duty cycle values between 33% and  
100% allow smooth control of the fans. The speed of each fan can be  
monitored via TACH inputs, which can be reprogrammed as analog  
inputs to allow speeds for 2wire fans to be measured via sense  
resistors. The device also detects a stalled fan. A dedicated fan speed  
control loop provides control without the intervention of CPU  
software. It also ensures that if the CPU or system locks up, each fan  
can still be controlled based on temperature measurements, and the fan  
speed is adjusted to correct any changes in system temperature. Fan  
speed can also be controlled using existing ACPI software.  
CASE 492  
MARKING DIAGRAM  
1
1031A  
RQZ  
#YYWW  
Two inputs (4 pins) are dedicated to remote temperaturesensing  
diodes with an accuracy of 1°C, and an onchip temperature sensor  
allows ambient temperature to be monitored. The device has a  
programmable INT output to indicate error conditions, and a dedicated  
FAN_FAULT output to signal fan failure. The THERM pin is a  
failsafe output for overtemperature conditions that can be used to  
throttle a CPU clock.  
xxx  
#
YY  
WW  
= Specific Device Code  
= PbFree Package  
= Date Code  
= Work Week  
PIN ASSIGNMENT  
1
2
3
4
5
6
7
8
PWM_OUT1  
TACH1/AIN1  
PWM_OUT2  
TACH2/AIN2  
GND  
16  
SCL  
Features  
Optimized for Pentium III  
15 SDA  
14  
ADM1031  
INT(SMBALERT)  
Reduced Guardbanding Software  
Automatic Fan Speed Control, Independent of CPU  
Intervention After Initial Setup  
13  
12  
11  
10  
9
ADD  
D2+  
D2–  
D1+  
D1–  
V
CC  
0.125°C Resolution on External Temperature Channels  
Control Loop to Minimal Acoustic Noise and Battery  
Consumption  
THERM  
FAN_FAULT  
Remote Temperature Measurement Accurate to 1°C  
Using Remote Diode (Two Channels)  
Local Sensor with 0.25°C Resolution  
Overtemperature THERM Output Pin for CPU  
Throttling  
Pulse Width Modulation (PWM) Fan Control for 2 Fans  
Programmable PWM Frequency and PWM Duty Cycle  
Tach Fan Speed Measurement (Two Channels)  
Programmable INT Output Pin  
Configurable Offsets for Temperature Channels 3.0 V  
to 5.5 V Supply Range  
Analog Input to Measure Fan Speed of 2Wire Fans  
Shutdown Mode to Minimize Power Consumption  
Limit Comparison of All Monitored Values  
This is a PbFree Device  
(Using Sense Resistor)  
2Wire System Management Bus (SMBus) with ARA  
Support  
Applications  
Notebook PCs, Network Servers, and Personal Computers  
Telecommunications Equipment  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 29 of this data sheet.  
© Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
May, 2010 Rev. 4  
ADM1031/D  

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