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參數資料
| 型號： | ADM1033ARQZ-RL7 |
| 廠商： | ON Semiconductor |
| 文件頁數： | 24/35頁 |
| 文件大小： | 424K |
| 描述： | IC THERM/FAN SPEED CTLR 16-QSOP |
| 產品變化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation 30/Sept/2011 |
| 標準包裝： | 1,000 |
| 功能： | 風扇控制，溫度監控器 |
| 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： | ±1°C |
| 拓撲： | ADC，比較器，多路復用器，寄存器庫 |
| 輸出類型： | SMBus? |
| 輸出警報： | 是 |
| 輸出風扇： | 是 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 16-QSOP |
| 包裝： | 帶卷 (TR) |
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ADM1033
http://onsemi.com
24
Figure 40 and Figure 41 show what the look-up table
looks like if all eight points are used on the one curve.
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.
Figure 40. Programming the Look-up Table in
Discreet Fan Speeds Mode
TACH COUNT 8
TACH COUNT 7
TACH COUNT 6
TACH COUNT 5
TACH COUNT 4
TACH COUNT 3
TACH COUNT 2
TACH COUNT 1
T1
T2
T3
T4
T5
T6
T7
T8
TEMPERATURE
FAN SPEED
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.
Figure 41. Programming the Look-up Table in Linear
Fan Speeds Mode
TACH COUNT 8
T1
TEMPERATURE
FAN SPEED
T2
T3 T4
T5
T6 T7
T8
TACH COUNT 7
TACH COUNT 6
TACH COUNT 5
TACH COUNT 4
TACH COUNT 3
TACH COUNT 2
TACH COUNT 1
Figure 42. Programming Two Points on the
Look-up Table
TACH COUNT 2 TO 8
T1
TEMPERATURE
FAN SPEED
T2
TACH COUNT 1
T (3 TO 8) = 癈
Once the temperature exceeds the highest temperature
point in the look-up table, the fan speed remains at the
highest speed until the temperature drops below the T7
temperature value. When the look-up table is split in two, the
same applies.
If the temperatures in T1 to T8 are not programmed in
succession, the fan speed moves to the next highest
programmed temperature as the temperature increases.
Similarly, when the temperature decreases, it ignores
programmed higher temperatures and jumps to the next lower
temperature. Therefore, the temperature-to-fan speed profile
for increasing and decreasing temperature can be different.
When programming the look-up table, the user has the
option to use between two and eight points for the fan. If the
user just wants to program a transfer curve (and knows the
starting temperature, minimum speed, maximum
temperature, and maximum speed), then all the user needs
to program are four parameters: T1, T2, FS1, and FS2. The
remainder of the look-up temperature thresholds should
remain at their default values of +191癈. If required, the FS3
should be programmed with the same value as FS2 to give
the flat curve, if required. Or, the fan speeds can be left at the
default value of 0. However, it is normal to program a
THERM
limit as well. Once this temperature is exceeded
and the boost bit is set, the fan run to full speed. This
overrides the look-up table.
Table 30. LOOK-UP TABLE REGISTER ADDRESS
x
Temperature, x
FSx, LSB
FSx, MSB
1
0x22
0x2A
0x2B
2
0x23
0x2C
0x2D
3
0x24
0x2E
0x2F
4
0x25
0x30
0x31
5
0x26
0x32
0x33
6
0x27
0x34
0x35
7
0x28
0x36
0x37
8
0x29
0x38
0x39
Setting Up the Look-up Table in Linear Mode
When Discrete/Linear Speed (Bit 2) is set to 1 (default),
the TACH count decreases linearly (and therefore the fan
speed increases) with temperature.
Example: At temperature T
X
, the fans run at FS
X
and fan
speed increases with temperature to FS
X+1
at temperature
T
X+1
.
Alternatively, the fan can be run at discrete fan speeds.
When Discrete/Linear Speed (Bit 2) is set to 0, the fan runs
at a new speed once the temperature threshold is exceeded.
Setting Which Temperature Channel Controls a Fan
Fan Behavior Register (Address 0x07)
Bits <1:0> = DRIVE1 Behavior (D1B)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 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 |
| ADM1034ARQ-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 |
| ADM1034ARQ-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 |
| ADM1034ARQZ | 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 |
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