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參數資料
型號: ADM1033
廠商: ANALOG DEVICES INC
元件分類: 模擬信號調理
英文描述: Thermal Monitor and Fan Speed (RPM) Controller
中文描述: SPECIALTY ANALOG CIRCUIT, PDSO16
封裝: QSOP-16
文件頁數: 30/40頁
文件大小: 1164K
代理商: ADM1033
ADM1033
PROGRAMMING THE THERM LIMIT FOR
TEMPERATURE CHANNELS
THERM is the absolute maximum temperature allowed on a
temperature channel. Above this temperature, a component
such as the CPU or VRM might operate beyond its safe
operating limit. When the temperature exceeds THERM, all fans
are driven at full speed to provide critical system cooling. The
fans remain running at 100% until the temperature drops below
THERM Hysteresis. The hysteresis value can be pro-
grammed; its default is 5°C. If the boost disable bit (Bit 1) is set
in Configuration Register 2, the fans do not run to full speed.
Rev. 0 | Page 30 of 40
The THERM limit is considered the maximum worst-case
operating temperature of the system. Exceeding any THERM
limit runs all fans at full speed, a condition with very negative
acoustic effects. This limit should be set up as a fail-safe and not
exceeded under normal system operating conditions. The
THERM temperature limit registers are listed in Table 32.
Table 32. THERM Hysteresis Registers
Address
Description
0x0D
Local THERM Limit
0x10
Remote THERM Limit
Default
0x95 (85°C)
0x95 (85°C)
The THERM hysteresis register is at Address 0x1A. A value is
programmed and applied to both temperature channels—local
and remote. A THERM hysteresis value of between 0°C and
15°C can be programmed with a resolution of 1°C. See Table 33.
Table 33. Programming THERM Hysteresis
Code
Hysteresis Value
0000 0000
0°C
0000 0001
1°C
0000 0010
2°C
0000 0101
5°C
0000 1000
8°C
0000 1111
15°C
XOR TREE TEST MODE
The ADM1033 includes an XOR tree test mode. This mode
is useful for in-circuit test equipment at board-level testing.
By applying stimulus to the pins included in the XOR test, it
is possible to detect opens or shorts on the system board.
Figure 43 shows the signals exercised in this mode.
FAN_FAULT/REF
TACH1
ALERT_COMP
THERM
ALERT
LOCATION
DRIVE1
0
Figure 43. XOR Tree Test
LOCK BIT
Setting the lock bit (Bit 6) of Configuration Register 1 (Address
0x01) makes all the lockable registers read-only. These registers
remain read only until the ADM1033 is powered down and
back up again. For more information on which registers are
lockable, see Table 33.
SW RESET
Setting the software reset bit (Bit 0) of Configuration Register 1
(Address 0x01) resets all software-resettable bits to their default
value. For more information on resetting registers and their
default values, see Table 34 to Table 68.
相關PDF資料
PDF描述
ADM1033ARQ Thermal Monitor and Fan Speed (RPM) Controller
ADM1033ARQ-REEL Thermal Monitor and Fan Speed (RPM) Controller
ADM1033ARQ-REEL7 Thermal Monitor and Fan Speed (RPM) Controller
ADM1033ARQZ Thermal Monitor and Fan Speed (RPM) Controller
ADM1033ARQZ-REEL Thermal Monitor and Fan Speed (RPM) Controller
相關代理商/技術參數
參數描述
ADM1033ARQ 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監控系統(傳感器) 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C,外部傳感器 精確度:±2.5°C 本地(最大值),±5°C 遠程(最大值) 拓撲:ADC,比較器,寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1033ARQ-REEL 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監控系統(傳感器) 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C,外部傳感器 精確度:±2.5°C 本地(最大值),±5°C 遠程(最大值) 拓撲:ADC,比較器,寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1033ARQ-REEL7 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監控系統(傳感器) 傳感器類型:內部和外部 感應溫度:-40°C ~ 125°C,外部傳感器 精確度:±2.5°C 本地(最大值),±5°C 遠程(最大值) 拓撲:ADC,比較器,寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應商設備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1033ARQZ 功能描述:馬達/運動/點火控制器和驅動器 +/- 1 C Digital 2-Wire RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube
ADM1033ARQZ-REEL 功能描述:板上安裝溫度傳感器 +/- 1 C Digital 2-Wire RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數字輸出 - 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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor
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