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參數資料
型號: MAX6670AUB45+
廠商: Maxim Integrated
文件頁數: 4/8頁
文件大小: 217K
描述: IC TEMP SENSOR REMOTE 10-UMAX
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 50
功能: 風扇控制,溫度監控器
傳感器類型: 外部
感應溫度: 45°C 分界點
精確度: ±2.2°C(最小值)
拓撲: 風扇控制
輸出類型: 數字
輸出警報:
輸出風扇:
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: 10-TFSOP,10-MSOP(0.118",3.00mm 寬)
供應商設備封裝: 10-µMAX
包裝: 管件
Detailed Description
The MAX6668/MAX6670 are simple fan controllers/dri-
vers that turn on an internal power transistor when the
sensed temperature of an external P-N junction
exceeds a factory-set threshold. By connecting a small
(up to +12V/250mA nominal) cooling fan to FANOUT, a
simple on/off fan-control system is created. Do not con-
nect the fan to a power supply of higher than 12V nomi-
nal, 15V maximum.
FANOUT Driver and FORCEON Controller
FANOUT Fan-Driver Output
FANOUT is an open-drain output that sinks greater than
250mA of current to turn on the fan, either when the fan
trip threshold is exceeded or the fan is forced on by dri-
ving FORCEON low.
FORCEON Fan-Control Input
Drive FORCEON low to turn on the fan when the
MAX6670s remote-sensing junction temperature is less
than the fan trip threshold temperature. This overrides
the internal control circuitry and allows for an external
device to activate the fan.
Overtemperature Alarm Outputs
WARN Output (MAX6670 Only)
WARN is an active-low, open-drain digital output that
indicates when the external P-N junctions temperature
exceeds 15癈 above the fan trip threshold. The WARN
output serves as a warning that the system temperature
has continued to rise well above the fan activation tem-
perature.
OT Output (MAX6670 Only)
OT is an active-low, open-drain digital output that indi-
cates when the external P-N junctions temperature
exceeds 30癈 above the fan trip threshold. OT serves
as a thermal shutdown output to the system in case of
excessive temperature rise.
Hysteresis Input
The temperature comparator has hysteresis to prevent
small temperature changes near the threshold temper-
ature from causing the fan to turn on and off repeatedly
over short periods of time. The FANOUT pin goes
active and powers the fan when the external P-N junc-
tions temperature exceeds the factory-programmed
Remote Temperature Switches with Integrated
Fan Controller/Driver
4  _______________________________________________________________________________________
Pin Description
PIN
MAX6668
MAX6670
NAME
FUNCTION
1
1
PGND
Power Ground. PGND is the power ground for the FANOUT power MOSFET switch.
2
5
FORCEON
Fan-Control Input. Drive FORCEON high for normal operation. Drive FORCEON low
to force fan on.
3
3
DXP
Current Source Positive Input. Connect to the anode of the external diode-
connected transistor. Do not leave DXP floating. Connect a 2200pF capacitor
between DXP and DXN for noise filtering.
4
4
DXN
Current Sink Negative Input. Connect to the cathode of the external diode-
connected transistor. DXN is internally biased to a diode voltage drop.
5, 7
7
GND
Ground
6
8
V
DD
Positive Power Supply
8
10
FANOUT
Fan-Drive Output. FANOUT is an open-drain power MOSFET that sinks up to 250mA
current to turn on the fan when the sensed temperature exceeds the fan trip
threshold or the fan is forced on by driving FORCEON low.

2
WARN
Temperature Warning Output. WARN is an open-drain output that goes low when
the sensed junction temperature is 15癈 higher than the fan trip threshold.

6
OT
Overtemperature Output. OT is an open-drain output that goes low when the sensed
junction temperature is 30癈 higher than the fan trip threshold.

9
HYST
Hysteresis Control Input. HYST is a three-level logic input for controlling the fan-
drive comparators hysteresis. Connect HYST to GND for 4癈 hysteresis, to V
DD
 for
12癈 hysteresis, or leave floating for 8癈 hysteresis.
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MAX6670AUB45+T 功能描述:板上安裝溫度傳感器 Remote Temperature Switch 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
MAX6670AUB45-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
MAX6670AUB50 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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