ADM1027
*
dBCOOL
"
Remote Thermal
Controller and Voltage Monitor
*Protected by U.S. Patent Nos. 6,188,189; 6,169,442; 6,097,239; 5,982,221;
and 5,867,012. Other patents pending.
FEATURES
Monitors up to 5 Supply Voltages
Controls and Monitors up to 4 Fan Speeds
1 On-Chip and 2 Remote Temperature Sensors
Monitors up to 5 Processor VID Bits
Automatic Fan Speed Control Mode Controls System
Cooling Based on Measured Temperature
Enhanced Acoustic Mode Dramatically Reduces User
Perception of Changing Fan Speeds
2-Wire and 3-Wire Fan Speed Measurement
Limit Comparison of All Monitored Values
Meets SMBus 2.0 Electrical Specifications
(Fully SMBus 1.1 Compliant)
APPLICATIONS
Low Acoustic Noise PCs
Networking and Telecommunications Equipment
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The ADM1027 dBCOOL controller is a complete systems
monitor and multiple PWM fan controller for noise sensitive
applications requiring active system cooling. It can monitor
12 V, 5 V, 2.5 V CPU supply voltage, plus its own supply volt-
age. It can monitor the temperature of up to two remote sensor
diodes, plus its own internal temperature. It can measure and
control the speed of up to four fans so that they operate at the
lowest possible speed for minimum acoustic noise. The auto-
matic fan speed control loop optimizes fan speed for a given
temperature. Once the control loop parameters are programmed,
the ADM1027 can vary fan speed without CPU intervention.
BAND GAP
REFERENCE
10-BIT
ADC
INPUT
SIGNAL
CONDITIONING
AND
ANALOG
MULTIPLEXER
GND
SERIAL BUS
INTERFACE
SCL SDA
VID
REGISTER
FAN SPEED
COUNTER
ADDRESS
POINTER
REGISTER
ADM1027
VALUE AND
LIMIT
REGISTERS
LIMIT
COMPARATORS
PWM
CONFIGURATION
REGISTERS
INTERRUPT
STATUS
REGISTERS
BAND GAP
TEMP. SENSOR
VID4
VID3
VID2
VID1
VID0
PWM
REGISTERS
AND
CONTROLLERS
PWM1
PWM2
V
CC
TO ADM1027
AUTOMATIC
FAN SPEED
CONTROL
PWM3
TACH1
TACH2
TACH3
TACH4
INTERRUPT
MASKING
SMBALERT
ACOUSTIC
ENHANCEMENT
CONTROL
V
CC
D1+
D1
D2+
D2
+5V
IN
+12V
IN
+2.5V
IN
V
CCP
SMBUS
ADDRESS
SELECTION
ADDR EN
ADDR
SELECT
?010 SCILLC. All rights reserved.
Publication Order Number:
May 2010 - Rev. 3
ADM1027/D
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ADM1029ARQZ-R7
IC SENSOR 2TEMP/FAN CTRL 24QSOP
ADM1030ARQZ-RL7
IC SNSR TEMP/FAN PWM CTRL 16QSOP
ADM1032ARZ-REEL
IC TEMP MONITOR 85DEG 8SOIC
ADM1033ARQZ-RL7
IC THERM/FAN SPEED CTLR 16-QSOP
ADM1034ARQZ-REEL
IC THERM/FAN SPEED CTRLR 16-QSOP
ADN8810ACPZ-REEL7
IC CURRENT SOURCE(12BIT) 24LFCSP
ADP2140ACPZ3328R7
IC REG DL BCK/LINEAR 10LFCSP
ADP5022ACBZ-6-R7
IC REG TRPL BCK/LINEAR 16WLCSP
相关代理商/技术参数
ADM1027ARQZ-RL71
制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:dBCOOLa?￠ Remote Thermal Controller and Voltage Monitor
ADM1028
制造商:AD 制造商全称:Analog Devices 功能描述:Remote Thermal Diode Monitor with Linear Fan Control
ADM1028ARQ
功能描述:IC SENSOR TEMP/FAN CTRL 16QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 标准包装:1 系列:- 功能:温度监控系统（传感器） 传感器类型:内部和外部 感应温度:-40°C ~ 125°C，外部传感器 精确度:±2.5°C 本地（最大值），±5°C 远程（最大值） 拓扑:ADC，比较器，寄存器库 输出类型:2 线 SMBus? 输出警报:无 输出风扇:无 电源电压:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:SOT-23-8 供应商设备封装:SOT-23-8 包装:Digi-Reel® 其它名称:296-22675-6
ADM1028ARQ-REEL7
制造商:Rochester Electronics LLC 功能描述:TDM + LINEAR FAN CONTROL I.C. - Tape and Reel
ADM1029
制造商:AD 制造商全称:Analog Devices 功能描述:Dual PWM Fan Controller and Temperature Monitor for High Availability Systems
ADM1029ARQ
制造商:Rochester Electronics LLC 功能描述:TDM AND FAN CONTROLLER I.C. - Bulk
ADM1029ARQ-REEL7
制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述:
ADM1029ARQZ
功能描述:马达/运动/点火控制器和驱动器 +/- 1 C Digital Serial RoHS:否 制造商:STMicroelectronics 产品:Stepper Motor Controllers / Drivers 类型:2 Phase Stepper Motor Driver 工作电源电压:8 V to 45 V 电源电流:0.5 mA 工作温度:- 25 C to + 125 C 安装风格:SMD/SMT 封装 / 箱体:HTSSOP-28 封装:Tube