- 您现在的位置：买卖IC网 > Sheet目录1194 > ADT7473ZEVB (ON Semiconductor)BOARD EVALUATION FOR ADT7473
ADT7473
The T HYST setting applies not only to the temperature
hysteresis for fan on/off, but the same setting is used for the
T THERM hysteresis value, described in Step 6: T RANGE for
Temperature Channels section. Therefore, programming
Register 0x6D and Register 0x6E sets the hysteresis for both
fan on/off and the THERM function.
Hysteresis Registers
Register 0x6D, Remote 1, Local Hysteresis Register
Bits <7:4>, Remote 1 temperature hysteresis (4 ? C default)
T RANGE
100%
0%
Bits <3:0>, Local temperature hysteresis (4 ? C default)
Register 0x6E, Remote 2 Temperature Hysteresis Register
Bits <7:4>, Remote 2 temperature hysteresis (4 ? C default)
In some applications, it is required that fans not turn off
below T MIN , but remain running at PWM MIN . Bits <7:5> of
the Enhanced Acoustics Register 1 (0x62) allow the fans to
be turned off or to be kept spinning below T MIN . If the fans
are always on, the T HYST value has no effect on the fan when
the temperature drops below T MIN .
T MIN
T THERM
THERMAL CALIBRATION
100%
PWM
MIN
PWM
CONFIG
RAMP
S
CONTROL
(ACOUSTIC
PWM
GENERATOR
PWM1
ENHANCEMENT)
REMOTE2 =
CPU TEMP
T MIN T RANGE
THERMAL CALIBRATION
0%
100%
PWM
MIN
TACHOMETER1
MEASUREMENT
RAMP
PWM
CONFIG
TACH1
CPU FAN SINK
MUX
S
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
PWM2
T MIN
T RANGE
0%
PWM
TACHOMETER2
MEASUREMENT
PWM
TACH2
LOCAL =
VRM TEMP
THERMAL CALIBRATION
100%
MIN
RAMP
CONFIG
FRONT CHASSIS
S
CONTROL
(ACOUSTIC
ENHANCEMENT)
PWM
GENERATOR
PWM3
T MIN
T RANGE
0%
TACHOMETER3
AND 4
MEASUREMENT
TACH3
REMOTE1 =
AMBIENT TEMP
Figure 63. The T HYST Value Applies to Fan On/Off Hysteresis and THERM Hysteresis
REAR CHASSIS
Enhanced Acoustics Register 1 (0x62)
Bit 7 (MIN3) = 0, PWM3 is off (0% PWM duty cycle) when
temperature is below T MIN ? T HYST .
Bit 7 (MIN3) = 1, PWM3 runs at PWM3 minimum duty
cycle below T MIN ? T HYST .
Bit 6 (MIN2) = 0, PWM2 is off (0% PWM duty cycle) when
temperature is below T MIN ? T HYST .
Bit 6 (MIN2) = 1, PWM2 runs at PWM2 minimum duty
cycle below T MIN ? T HYST .
Bit 5 (MIN1) = 0, PWM1 is off (0% PWM duty cycle) when
temperature is below T MIN ? T HYST .
Bit 5 (MIN1) = 1, PWM1 runs at PWM1 minimum duty
cycle below T MIN ? T HYST .
Dynamic T MIN Control Mode
In addition to the automatic fan speed control mode
described in the Automatic Fan Control Overview section,
the ADT7473/ADT7473 ? 1 has a mode that extends the
basic automatic fan speed control loop. Dynamic T MIN
http://onsemi.com
42
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
ADT7475EBZEVB
BOARD EVALUATION FOR ADT7475
ADT7476EBZEVB
BOARD EVALUATION FOR ADT7476
ADT7490ZEVB
BOARD EVALUATION FOR ADT7490
ADZS-21262-1-EZEXT
BOARD DAUGHTER FOR ADSP-21262
ADZS-BF-EZEXT-1
BOARD DAUGHTER ADSP-BF533/561KIT
ADZS-BFAV-EZEXT
BOARD DAUGHT ADSP-BF533,37,61KIT
ADZS-BFSHUSB-EZEXT
BOARD DAUGHTER EZ EXTENDER
ADZS-BRKOUT-EX3
ADZS-BRKOUT-EX3
相关代理商/技术参数
ADT7475
制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:dBCOOL Remote Thermal Monitor and Fan Controller
ADT7475_1110
制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:dbCOOL Remote Thermal Monitor and Fan Controller
ADT7475ARQZ
功能描述:马达/运动/点火控制器和驱动器 MLTCH TDM FAN CTRLR 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
ADT7475ARQZ-REEL
功能描述:板上安装温度传感器 MULTICH TDM FAN CTRL 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
ADT7475ARQZ-REEL7
功能描述:IC REMOTE THERMAL CTRLR 16QSOP 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
ADT7475ARQZ-RL7
功能描述:板上安装温度传感器 MLTCH TDM FAN CTRLR
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
ADT7475EBZEVB
功能描述:BOARD EVALUATION FOR ADT7475 RoHS:否 类别:编程器，开发系统 >> 过时/停产零件编号 系列:dBCool® 标准包装:1 系列:- 传感器类型:CMOS 成像，彩色（RGB） 传感范围:WVGA 接口:I²C 灵敏度:60 fps 电源电压:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相关产品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
ADT7476
制造商:AD 制造商全称:Analog Devices 功能描述:dBCool Remote Thermal Controller and Voltage Monitor