参数资料
型号: ADT7476ARQZ
厂商: ON Semiconductor
文件页数: 1/65页
文件大小: 0K
描述: IC REMOTE THERMAL CTLR 24QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
QSOP 24ld Pkg (MSL) Change 17/Jun/2010
Product Discontinuation 30/Sept/2011
标准包装: 56
系列: dBCool®
功能: 风扇控制,温度监控器
传感器类型: 内部和外部
感应温度: -40°C ~ 125°C
精确度: ±2.5%
拓扑: ADC,比较器,风扇速度计数器,多路复用器,寄存器库
输出类型: SMBus?
输出警报:
输出风扇:
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 24-SSOP(0.154",3.90mm 宽)
供应商设备封装: 24-QSOP
包装: 管件
其它名称: ADT7476ARQZ-ND
ADT7476ARQZOS
ADT7476
Remote Thermal Controller
and Voltage Monitor
The ADT7476 controller is a thermal monitor and multiple PWM
fan controller for noise-sensitive or power-sensitive applications
(Top View)
SMBALERT
requiring active system cooling. The ADT7476 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.
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 ADT7476
also provides critical thermal protection to the system using the
bidirectional THERM pin as an output to prevent system or
component overheating.
Features
? Monitors Up to Five Voltages
? Controls and Monitors Up to Four Fans
? 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
? Enhanced Acoustic Mode Dramatically Reduces User Perception of
Changing Fan Speeds
? 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
? Meets SMBus 2.0 Electrical Specifications
? This Device is Pb-Free, Halogen Free and is RoHS Compliant
http://onsemi.com
QSOP ? 24 NB
CASE 492B
PIN ASSIGNMENT
SDA 1 24 PWM1/XTO
SCL 2 23 V CCP
GND 3 22 +2.5V IN /THERM
V CC 4 21 +12V IN /VID5
VID0/GPIO0 5 20 +5V IN
VID1/GPIO1 6 19 VID4/GPIO4
ADT7476
VID2/GPIO2 7 18 D1+
VID3/GPIO3 8 17 D1 ?
TACH3 9 16 D2+
PWM2/
10 15 D2 ?
TACH1 11 14 *
TACH2 12 13 PWM3/ADDREN
*TACH4/THERM/SMBALERT/GPIO6/ADDR SELECT
MARKING DIAGRAMS
ADT7476RQZ
#YYWW
xxxx
ADT7476RQZ
#
YYWW
xxxx
= Specific Device Code
= Pb-Free Package
= Date Code
= Assembly Lot Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 64 of this data sheet.
? Semiconductor Components Industries, LLC, 2013
December, 2013 ? Rev. 9
1
Publication Order Number:
ADT7476/D
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