- 您現(xiàn)在的位置：買賣IC網(wǎng) > Datasheet目錄45 > NCT7491RQR2G (ON Semiconductor)IC REMOTE THERMAL MONITOR 24QSOP Datasheet資料下載
參數(shù)資料
| 型號： | NCT7491RQR2G |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 1/80頁 |
| 文件大小： | 844K |
| 描述： | IC REMOTE THERMAL MONITOR 24QSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | * |
當(dāng)前第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁
?Semiconductor Components Industries, LLC, 2013
October, 2013 Rev. 1
1
Publication Order Number:
NCT7491/D
NCT7491
Remote Thermal Monitor
and Fan Controller with
PECI 3.0 Interface and
SMBus Compatible Master
The NCT7491 is a twowire serially programmable hardware
monitor. It can monitor 2 remote temperature zones and its own
ambient temperature. A PECI 3.0 single wire interface allows the
NCT7491 to monitor CPU temperatures. The NCT7491 also
implements an SMBus compatible master, allowing it to read
automatically from thermal sensors on the SMBus. The NCT7491 can
automatically control the speed of 3 fans using PWM control, and
monitor the speed of 4 fans. There are 4 analog inputs, used for
measuring 12 V, 5 V, 2.5 V and Vccp channels. The NCT7491 supply
voltage and PECI V
TT
voltage are also monitored. Each of the
measured temperature, voltage and fan speed values are compared
with programmable limits and if any channel is outside the
programmed limit an interrupt is generated via the ALERT output pin.
A THERM output is also available for failsafe thermal control. Up to
3 GPIO pins are available for digital control or signalling.
Communication with the NCT7491 is accomplished via the
SMBus/I
2
C interface which is compatible with industry standard
protocols. The SMBus address is set by 2 address selection pins.
The NCT7491 is available in a 24lead QFN or QSOP package and
operates over a supply range of 3.0 V to 3.6 V.
Features
" PECI 3.0 Master for CPU Monitoring
" SMBus Compatible Master
" Onchip Temperature Sensor
" 2 Remote Sensor Channels
" Series Resistance Cancellation on Remote Sensors
" 3 PWM Fan Control Outputs
" 4 Tach Monitoring Input
" PWM Automatic Fan Speed Control
" 4 Analog Inputs for Voltage Monitoring
" Vdd Supply Voltage Monitoring
" PECI V
TT
Voltage Monitoring
" Overtemperature Outputs
" Limit Comparison of Monitored Channels
" SMBus Address Selection Allows up to 3 Devices
" Meets SMBus 2.0 Electrical Specifications (fully SMBus 1.1
compliant)
" These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
MARKING DIAGRAMS
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 79 of this data sheet.
ORDERING INFORMATION
QFN24
MN SUFFIX
CASE 485L
QSOP24
RQ SUFFIX
CASE 492B
(Top Views)
xxx
= Specific Device Code
A
= Assembly Location
WL
= Wafer Lot
Y
= Year
WW
= Work Week
xxxxxxxxx
AWLYWW
XXXXX = Specific Device Code
A
= Assembly Location
L
= Wafer Lot
Y
= Year
W
= Work Week
G
= PbFree Package
XXXXX
XXXXX
ALYWG
G
(*Note: Microdot may be in either location)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| NCT75MNR2G | IC SENSOR TEMP DGTL 8DFN |
| NCV8881PWR2G | IC REG TRPL BUCK/LINEAR 16SOIC |
| NE1617ADS,112 | IC TEMP MONITOR 16SSOP |
| NE1619DS,118 | IC TEMP MONITOR 16SSOP |
| NIS5112D1R2G | IC ELECTRONIC FUSE HOTSWAP 8SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| NCT75DMR2G | 功能描述:板上安裝溫度傳感器 2-Channel Digital Thermometer w/ Alarm RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| NCT75DR2G | 功能描述:板上安裝溫度傳感器 2-Channel Digital Thermometer w/ Alarm RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| NCT75MNR2G | 功能描述:板上安裝溫度傳感器 HAS2MONOJLCC84SPACE RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準(zhǔn)確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關(guān)閉: 安裝風(fēng)格: 封裝 / 箱體: 設(shè)備功能:Temperature and Humidity Sensor |
| NCT7717U TR | 制造商:Nuvoton Technology Corp 功能描述:SMBUS INTERFACE TEMP. SENSOR W 制造商:Nuvoton Technology Corp 功能描述:IC SMBUS TEMP SENSOR 8MSOP |
| NCT7718W TR | 制造商:Nuvoton Technology Corp 功能描述:IC SMBUS TEMP SENSOR 8MSOP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。