参数资料
型号: ADT7468ARQ
厂商: ON Semiconductor
文件页数: 43/81页
文件大小: 0K
描述: IC REMOTE THERMAL CTRLR 24-QSOP
产品变化通告: MFG CHG Notification ADI to ON Semi
Product Obsolescence 11/Feb/2009
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 ~ 120°C,外部传感器
精确度: ±2°C(最小值)
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 ~ 5.5 V
工作温度: -40°C ~ 120°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
ADT7468
STEP 2: CONFIGURING THE MUX
After the system hardware configuration is determined, the fans
can be assigned to particular temperature channels. Not only
can fans be assigned to individual channels, but the behavior of
the fans is also configurable. For example, fans can run under
automatic fan control, they can run manually (under software
control), or they can run at the fastest speed calculated by
multiple temperature channels. The mux is the bridge between
temperature measurement channels and the three PWM
outputs.
Bits <7:5> (BHVR) of Registers 0x5C, 0x5D, and 0x5E (PWM
configuration registers) control the behavior of the fans
connected to the PWM1, PWM2, and PWM3 outputs. The
values selected for these bits determine how the mux connects a
temperature measurement channel to a PWM output.
Automatic Fan Control MUX Options
<7:5> (BHVR), Registers 0x5C, 0x5D, 0x5E.
000 = Remote 1 temperature controls PWMx
001 = local temperature controls PWMx
010 = Remote 2 temperature controls PWMx
MUX
101 = Fastest speed calculated by local and Remote 2
temperature controls PWMx
110 = Fastest speed calculated by all three temperature
channels controls PWMx
The fastest speed calculated options pertain to controlling one
PWM output based on multiple temperature channels. The
thermal characteristics of the three temperature zones can be
set to drive a single fan. An example would be the fan turning
on when Remote 1 temperature exceeds 60°C or if the local
temperature exceeds 45°C.
Other MUX Options
<7:5> (BHVR), Registers 0x5C, 0x5D, 0x5E.
011 = PWMx runs full speed
100 = PWMx disabled (default)
111 = manual mode. PWMx is runner under software
control. In this mode, PWM duty cycle registers
(Registers 0x30 to 0x32) are writable and control the
PWM outputs.
THERMAL CALIBRATION
100%
PWM
MIN
PWM
CONFIG
RAMP
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
PWM1
REMOTE 1 =
AMBIENT TEMP
T MIN T RANGE
THERMAL CALIBRATION
0%
100%
PWM
MIN
TACHOMETER 1
MEASUREMENT
PWM
CONFIG
TACH1
CPU FAN SINK
RAMP
MUX
CONTROL
(ACOUSTIC
PWM
GENERATOR
PWM2
ENHANCEMENT)
T MIN
T RANGE
0%
PWM
TACHOMETER 2
MEASUREMENT
PWM
TACH2
LOCAL =
VRM TEMP
THERMAL CALIBRATION
100%
MIN
RAMP
CONFIG
FRONT CHASSIS
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
PWM3
T MIN
T RANGE
0%
TACHOMETER 3
AND 4
MEASUREMENT
TACH3
REMOTE 2 =
CPU TEMP
Figure 56. Assigning Temperature Channels to Fan Channels
Rev. 3 | Page 43 of 81 | www.onsemi.com
REAR CHASSIS
相关PDF资料
PDF描述
VE-J3H-CW CONVERTER MOD DC/DC 52V 100W
ASC05DRES CONN EDGECARD 10POS .100 EYELET
EP1K30FC256-3N IC ACEX 1K FPGA 30K 256-FBGA
VE-J3F-CW CONVERTER MOD DC/DC 72V 100W
EB81-S0K0660W CONN EDGEBOARD DUAL 12POS 5A
相关代理商/技术参数
参数描述
ADT7468ARQ-REEL 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 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
ADT7468ARQ-REEL7 功能描述:IC REMOTE THERMAL CTRLR 24-QSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 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
ADT7468ARQZ 功能描述:板上安装温度传感器 RMT THRM CTR VLT MON RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
ADT7468ARQZ-REEL 功能描述:板上安装温度传感器 RMT THRM CTR VLT MON RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
ADT7468ARQZ-REEL7 功能描述:IC REMOTE THERMAL CTRLR 24QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:dBCool® 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