參數(shù)資料
型號(hào)： ADM1033ARQZ
廠商： Analog Devices, Inc.
英文描述： Thermal Monitor and Fan Speed (RPM) Controller
中文描述： 熱監(jiān)測(cè)和風(fēng)扇轉(zhuǎn)速（RPM）控制器
文件頁(yè)數(shù)： 28/40頁(yè)
文件大小： 1164K
代理商： ADM1033ARQZ
ADM1033
LOOK-UP TABLE: MODES OF OPERATION
The ADM1033 look-up table has two modes of operation used
to determine the behavior of the system:
Rev. 0 | Page 28 of 40
Manual mode
Manual Mode
In manual mode, the ADM1033 is under software control. The
software programs the required fan speed value or target rpm
value. The ADM1033 then outputs that fan speed.
Look-up table
Programming Target Fan Speed
In this mode, the user programs the target rpm as a TACH
count for N poles or a TACH count for one full rotation of the
fan. This assumes that the number of poles is programmed
correctly in Configuration 3 Register (Address 0x03).
Follow these steps to program the target fan speed:
1.
Place the ADM1033 in manual mode. Set Bit 7 (Table/SW)
of Configuration Register 1 (Address 0x01) = 0.
2.
Program the target TACH count (fan speed) using the
following equation:
TACH Count
= (
f
× 60)/
R
where:
f
= clock frequency = 81.92 kHz
R
= required rpm value
Example
1
: If the desired value is 5,000 rpm, program the
following value to the TACH pulse period registers:
TACH Pulse Period
= (
f
× 60)/5000
TACH Pulse Period
= 983d = 0x03D7
Example
2
: If the desired value is 3,500 rpm, program the
following value to the TACH pulse period registers:
TACH Pulse Period
= (
f
× 60)/3500
TACH Pulse Period
= 1404d = 0x057C
Table 28. Registers to be Programmed
Fan
Description
Example 1
Look-Up Table LSB
Example 1
Look-Up Table MSB
Example 2
Look-Up Table LSB
Example 2
Look-Up Table MSB
Address
0x2A
0x2B
0x2C
0x2D
Value
0xD7
0x03
0x7C
0x05
LOOK-UP TABLE
The ADM1033 allows the user to program a temperature-to-
fan-speed profile. There are 24 registers in the look-up table,
eight for temperature and 16 for target fan speed (each target
fan speed is two registers). In total, there are eight available
points.
There are two options when programming the look-up table. It
can be programmed to make the fan run at discrete speeds and
jump to the new speed once the temperature threshold is
crossed. Or, it can linearly ramp the TACH count between the
two temperature thresholds.
Figure 40 and Figure 41 show what the look-up table looks like,
if all eight points are used on the one curve for both fans.
Figure 40 shows the transfer curve when the fan is programmed
to run at discrete speeds. The ADM1033 spins the fan at its new
speed once a threshold is crossed.
TACH COUNT 8
TACH COUNT 7
FAN SPEED
T1
T2
T3
T4
T5
T6
T7
T8
TEMPERATURE
TACH COUNT 6
TACH COUNT 5
TACH COUNT 4
TACH COUNT 3
TACH COUNT 2
TACH COUNT 1
0
Figure 40. Programming the Look-Up Table in Discrete RPM Mode
Figure 41 shows the transfer curve if the linear fan speeds
option is chosen. At temperature T1, the fan runs at Fan Speed 1.
As the temperature increases, the fan speed increases until it
reaches Fan Speed 2 at T2.
TACH COUNT 8
TACH COUNT 7
FAN SPEED
T1
T2
T3
T4
T5
T6
T7
T8
TEMPERATURE
TACH COUNT 6
TACH COUNT 5
TACH COUNT 4
TACH COUNT 3
TACH COUNT 2
TACH COUNT 1
0
Figure 41. Programming the Look-Up Table in Linear Fan Speeds Mode
相關(guān)PDF資料
PDF描述
ADM1033ARQZ-REEL Thermal Monitor and Fan Speed (RPM) Controller
ADM1033ARQZ-REEL7 Thermal Monitor and Fan Speed (RPM) Controller
ADM1041ARQ-REEL Secondary-Side Controller with Current Share and Housekeeping
ADM1041ARQ-REEL7 Secondary-Side Controller with Current Share and Housekeeping
ADM1041 Secondary-Side Controller with Current Share and Housekeeping
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(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
ADM1033ARQZ-REEL7 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)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(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1033ARQZ-RL7 功能描述:IC THERM/FAN SPEED CTLR 16-QSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)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(yuǎn)程（最大值） 拓?fù)?ADC，比較器，寄存器庫(kù) 輸出類型:2 線 SMBus? 輸出警報(bào):無(wú) 輸出風(fēng)扇:無(wú) 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(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6
ADM1034 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Thermal Monitor and Fan Speed (RPM) Controller
ADM1034ARQ 制造商:ON Semiconductor 功能描述:Temp Sensor Digital Serial (2-Wire) 16-Pin QSOP Tube 制造商:Rochester Electronics LLC 功能描述:DUAL FAN CONTROLLER, SRC, SMBUS I.C. - Bulk
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*