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参数资料
| 型号： | ADM1033ARQ-REEL7 |
| 厂商： | ON Semiconductor |
| 文件页数： | 24/35页 |
| 文件大小： | 424K |
| 描述： | IC THERM/FAN SPEED CTRLR 16-QSOP |
| 产品变化通告： | MFG CHG Notification ADI to ON Semi Product Discontinuation Notice 25/Aug/2008 |
| 标准包装： | 1,000 |
| 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 ~ 125°C，外部传感器 |
| 精确度： | ±1°C |
| 拓扑： | ADC，比较器，多路复用器，寄存器库 |
| 输出类型： | SMBus? |
| 输出警报： | 是 |
| 输出风扇： | 是 |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (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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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM1033ARQZ | 功能描述:马达/运动/点火控制器和驱动器 +/- 1 C Digital 2-Wire 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 |
| ADM1033ARQZ-REEL | 功能描述:板上安装温度传感器 +/- 1 C Digital 2-Wire 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 |
| ADM1033ARQZ-REEL7 | 功能描述:IC THERM/FAN SPEED CTRLR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 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 |
| ADM1033ARQZ-RL7 | 功能描述:IC THERM/FAN SPEED CTLR 16-QSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 热管理 系列:- 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 |
| ADM1034 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Thermal Monitor and Fan Speed (RPM) Controller |
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