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ADT7476A PDF预览

ADT7476A

更新时间: 2024-02-16 20:49:07
品牌 Logo 应用领域
安森美 - ONSEMI 监视器控制器
页数 文件大小 规格书
67页 601K
描述
dBCOOL Remote Thermal Controller and Voltage Monitor

ADT7476A 技术参数

生命周期:ActiveReach Compliance Code:unknown
风险等级:5.73最大精度(摄氏度):2.5 Cel
其他特性:HYSTERESIS IS 0.5V主体宽度:3.91 mm
主体高度:1.54 mm主体长度或直径:8.66 mm
外壳:PLASTIC安装特点:SURFACE MOUNT
位数:10最大工作电流:3 mA
最高工作温度:125 °C最低工作温度:-40 °C
输出接口类型:4-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:3.6 V
最小供电电压:3 V表面贴装:YES
端接类型:SOLDERBase Number Matches:1

ADT7476A 数据手册

 浏览型号ADT7476A的Datasheet PDF文件第2页浏览型号ADT7476A的Datasheet PDF文件第3页浏览型号ADT7476A的Datasheet PDF文件第4页浏览型号ADT7476A的Datasheet PDF文件第5页浏览型号ADT7476A的Datasheet PDF文件第6页浏览型号ADT7476A的Datasheet PDF文件第7页 
ADT7476A  
dBCOOLR Remote Thermal  
Controller and Voltage  
Monitor  
The ADT7476A dBCOOL controller is a thermal monitor  
and multiple PWM fan controller for noise-sensitive or  
power-sensitive applications requiring active system cooling. The  
ADT7476A can drive a fan using either a low or high frequency drive  
signal and can monitor the temperature of up to two remote sensor  
diodes plus its own internal temperature. The part also measures and  
controls the speed of up to four fans, so the fans operate at the lowest  
possible speed for minimum acoustic noise.  
http://onsemi.com  
QSOP24 NB  
CASE 492B  
The automatic fan speed control loop optimizes fan speed  
for a given temperature. The effectiveness of the system’s thermal  
solution can be monitored using the THERM input. The ADT7476A  
also provides critical thermal protection to the system using the  
bidirectional THERM pin as an output to prevent system or  
component overheating.  
MARKING DIAGRAMS  
ADT7476AARQZ  
#YYWW  
Features  
Monitors Up to Five Voltages  
Improved TACH and PWM Performance  
Controls and Monitors Up to Four Fans  
xxxx  
High and Low Frequency Fan Drive Signal  
One On-Chip and Two Remote Temperature Sensors  
Extended Temperature Measurement Range Up to 191°C  
Automatic Fan Speed Control Mode Controls System Cooling Based  
on Measured Temperature  
XX  
#
= Specific Device Code  
= PbFree Package  
YYWW = Date Code  
xxxx  
= Assembly Lot Code  
Enhanced Acoustic Mode Dramatically Reduces User Perception of  
Changing Fan Speeds  
PIN ASSIGNMENT  
1
2
3
4
5
6
7
8
24  
SDA  
SCL  
GND  
PWM1/XTO  
Thermal Protection Feature via THERM Output  
Monitors Performance Impact of Intel® Pentium® 4 Processor  
Thermal Control Circuit via THERM Input  
3-Wire and 4-Wire Fan Speed Measurement  
Limit Comparison of All Monitored Values  
5.0 V Support on all TACH and PWM Channels  
Meets SMBus 2.0 Electrical Specifications  
These are PbFree Devices  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
V
CCP  
+2.5V /THERM  
IN  
V
+12V /VID5  
IN  
CC  
VID0/GPIO0  
VID1/GPIO1  
VID2/GPIO2  
VID3/GPIO3  
TACH3  
+5V  
IN  
VID4/GPIO4  
D1+  
ADT7476A  
D1-  
D2+  
9
PWM2/  
SMBALERT  
D2-  
10  
TACH4/THERM/SMBALERT/  
GPIO6/ADDR SELECT  
PWM3/ADDREN  
TACH1 11  
12  
TACH2  
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 66 of this data sheet.  
© Semiconductor Components Industries, LLC, 2010  
1
Publication Order Number:  
May, 2010 Rev. 3  
ADT7476A/D  

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