参数资料
型号: ADT7473ARQZ-REEL
厂商: ON Semiconductor
文件页数: 1/73页
文件大小: 0K
描述: IC REMOTE THERMAL CTLR 16QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
标准包装: 2,500
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: 16-SSOP(0.154",3.90mm 宽)
供应商设备封装: 16-QSOP
包装: 带卷 (TR)
其它名称: ADT7473ARQZ-REEL-ND
ADT7473ARQZ-REELOSTR
ADT7473
Remote Thermal Monitor
and Fan Control
The ADT7473/ADT7473 ? 1 controller is a thermal monitor and
multiple PWM fan controller for noise sensitive or power sensitive
applications requiring active system cooling. The
ADT7473/ADT7473 ? 1 can drive a fan using either a low or high
frequency drive signal, monitor the temperature of up to two remote
sensor diodes plus its own internal temperature, and measure and
control the speed of up to four fans so they operate at the lowest
possible speed for minimum acoustic noise.
The automatic fan speed control loop optimizes fan speed for a
given temperature. A unique dynamic T MIN control mode enables the
system thermals/acoustics to be intelligently managed. The
effectiveness of the system’s thermal solution can be monitored using
http://onsemi.com
QSOP ? 16
CASE 492
PIN ASSIGNMENTS
the THERM input. The ADT7473/ADT7473 ? 1 also provide critical
thermal protection to the system using the bidirectional THERM pin
as an output to prevent system or component overheating.
Features
? Controls and Monitors Up to 4 Fans
? High and Low Frequency Fan Drive Signal
SCL
GND
V CC
TACH3
PWM2/
SMBALERT
TACH1
1
2
3
4
5
6
ADT7473
(Top View)
16
15
14
13
12
11
SDA
PWM1/XTO
V CCP
D1+
D1 ?
D2+
?
?
?
1 On-Chip and 2 Remote Temperature Sensors
Series Resistance Cancellation on the Remote Channel
Extended Temperature Measurement Range, Up to 191 ? C
TACH2
PWM3
7
8
10
9
D2 ?
TACH4/GPIO/
THERM/
SMBALERT
?
?
?
?
?
?
?
Dynamic T MIN Control Mode Intelligently Optimizes System
Acoustics
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
SCL
GND
V CC
TACH3/
ADDR SELECT
PWM2/
THERM_LATCH
TACH1
TACH2
PWM3/
ADDREN
1
2
3
4
5
6
7
8
ADT7473 ? 1
(Top View)
16
15
14
13
12
11
10
9
SDA
PWM1/XTO
V CCP
D1+
D1 ?
D2+
D2 ?
TACH4/GPIO/
THERM/
SMBALERT
?
Limit Comparison of All Monitored Values
MARKING DIAGRAMS
?
?
Meets SMBus 2.0 Electrical Specifications
(Fully SMBus 1.1 Compliant)
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
ADT747
3ARQZ
#YYWW
ADT7473
ADT7473ARQZ
ADT7473 ? 1ARQZ
#
YYWW
ADT
7473 ? 1
ARQZ
#YYWW
ADT7473 ? 1
= Specific Device Code
= Specific Device Code
= Pb-Free Package
= Date Code
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 72 of this data sheet.
? Semiconductor Components Industries, LLC, 2012
June, 2012 ? Rev. 9
1
Publication Order Number:
ADT7473/D
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