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參數(shù)資料
| 型號： | MAX6626RMTT+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | 9-Bit/12-Bit Temperature Sensors with I<sup>2</sup>C-Compatible Serial Interface in a SOT23 |
| 中文描述： | DIGITAL TEMP SENSOR-SERIAL, 12BIT(s), 2Cel, SQUARE, SURFACE MOUNT |
| 封裝： | 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, MO-2212WEEA, TDFN-6 |
| 文件頁數(shù)： | 4/19頁 |
| 文件大?。?/td> | 486K |
| 代理商： | MAX6626RMTT+ |
MAX6625/MAX6626
9-Bit/12-Bit Temperature Sensors with
I2C-Compatible Serial Interface in a SOT23
12
______________________________________________________________________________________
Example 1: If THIGH is set to +100°C, TLOW is set to
+80°C, and the fault queue depth is set to four, OT
does not assert until four consecutive conversions
exceed +100°C. If the temperature is then read through
the I2C-compatible interface, OT deasserts. OT asserts
again when four consecutive conversions are less than
+80°C.
Example 2: If THIGH is set to +100°C, TLOW is set to
+80°C, and the fault queue depth is set to four, OT
does not assert until four consecutive conversions
exceed +100°C. If the THIGH register is then changed
to +120°C, OT deasserts and the IC looks for a new
THIGH fault.
Shutdown
The MAX6625/MAX6626 offer a low-power shutdown
mode. Enter shutdown mode by programming the shut-
down bit of the control register high. In shutdown, the
temperature register is set to 8000H and the ADC is
turned off, reducing the device current draw to 1A
(typ). After coming out of shutdown, the temperature
register continues to read 8000H until the first conver-
sion result appears. The fault queue is held in reset
during shutdown.
Thermal Considerations
The MAX6625/MAX6626 supply current is less than
1mA when the I2C-compatible interface is active. When
used to drive high-impedance loads, the devices dissi-
pate negligible power; therefore, the die temperature is
essentially the same as the package temperature. The
key to accurate temperature monitoring is good thermal
contact between the MAX6625/MAX6626 package and
the monitored device or circuit. In some applications,
the 6-pin SOT23 package may be small enough to fit
underneath a socketed P, allowing the device to moni-
tor the P’s temperature directly. Heat flows in and out
of plastic packages primarily through the leads. Short,
wide copper traces leading to the temperature monitor
ensure that heat transfers quickly and reliably. The rise
in die temperature due to self-heating is given by the
following formula:
TJ = PD θJA
where PD is the power dissipated by the MAX6625/
MAX6626, and θJA is the package’s thermal resistance.
The typical thermal resistance is +110°C/W for the 6-
pin SOT23 package. To limit the effects of self-heating,
minimize the output currents. For example, if the
MAX6625/MAX6626 sink 4mA with the maximum OT VL
specification of 0.8V, an additional 3.2mW of power is
dissipated within the IC. This corresponds to a 0.35°C
rise in the die temperature.
Applications
Figure 7 shows the MAX6625/MAX6626 used as a tem-
perature-triggered fan controller. Figure 8 shows the
MAX6625/MAX6626 used as a thermostat to control a
heating element.
4
6
+VS
+3V TO +5V
+12V
OT
MAX6625R
MAX6626R
2
12V 300mA
FAN MOTOR
LOGIC LEVEL
MOSFET
5
6
+VS
+3V TO +5V
OT
MAX6625P
MAX6626P
RELAY
5VDC, 20mA
125VAC, 1A
2N3904
HEATER
SUPPLY
HEATER
3
4k
Figure 7. Fan Controller
Figure 8. Simple Thermostat
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6626RMTT+ | 制造商:Maxim Integrated Products 功能描述:TEMP SENSOR DGTL I2C 6TDFN EP - Rail/Tube |
| MAX6626RMTT+T | 功能描述:板上安裝溫度傳感器 9-Bit/12-Bit Temperature Sensor 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6626RMUT | 制造商:Maxim Integrated Products 功能描述:32-BIT TEMPERATURE SENSOR W/ I2C-COMPATIBLE S 6 PINS THNSOT - Rail/Tube |
| MAX6626RMUT+T | 功能描述:板上安裝溫度傳感器 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| MAX6626RMUT-T | 功能描述:板上安裝溫度傳感器 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(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 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
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