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MAX6661AEE

更新时间： 2024-11-26 11:15:19
品牌 Logo 应用领域
美信 - MAXIM 调节器风扇
页数 文件大小 规格书
19页 257K
描述
Remote Temperature-Controlled Fan-Speed Regulator with SPI-Compatible Interface

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MAX6661AEE 数据手册

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19-2337; Rev 0; 1/02  
Remote Temperature-Controlled Fan-Speed  
Regulator with SPI-Compatible Interface  
General Description  
Features  
The MAX6661 is a remote temperature sensor and fan-  
speed regulator that provides complete closed-loop fan  
control. The remote temperature sensor is typically a  
common-collector PNP, such as a substrate PNP of a  
microprocessor, or a diode-connected transistor, typi-  
cally a low-cost, easily mounted 2N3904 NPN type or  
2N3906 PNP type.  
o Integrated Thermal Measurement and Fan  
Regulation  
o Programmable Fan Threshold Temperature  
o Programmable Temperature Range for Full-Scale  
Fan Speed  
o Accurate Closed-Loop Fan-Speed Regulation  
The device also incorporates a closed-loop fan con-  
troller that regulates fan speed with tachometer feed-  
back. The MAX6661 compares temperature data to a  
fan threshold temperature and gain setting, both pro-  
grammed over the SPI™ bus by the user. The result is  
automatic fan control that is proportional to the remote-  
junction temperature. The temperature feedback loop  
can be broken at any time for system control over the  
speed of the fan.  
o On-Chip Power Device Drives Fans Rated  
Up to 250mA  
o Programmable Under/Overtemperature Alarms  
o SPI-Compatible Serial Interface  
o ±±1C ꢀ(+01C to (±001Cꢁ Thermal-Sensing  
Accuracy  
Fan speed is voltage controlled as opposed to PWM  
controlled, greatly reducing acoustic noise and maxi-  
mizing fan reliability. An on-chip power device drives  
fans rated up to 250mA.  
Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
Temperature data is updated every 500ms and is read-  
able at any time over the SPI interface. The MAX6661 is  
accurate to 1°C (max) when the remote junction is  
between +60°C to +100°C. Data is formatted as a 10-  
bit + sign word with 0.125°C resolution.  
MAX6661AEE  
-40°C to +125°C  
16 QSOP  
The MAX6661 is specified between -40°C to +125°C  
and is available in a 16-pin QSOP package.  
Typical Operating Circuit  
12V  
3V TO 5.5V  
50Ω  
Applications  
0.1µF  
Telecom Systems  
Servers  
10kΩ  
EACH  
V
CC  
V
FAN  
Workstations  
INTERRUPT  
TO µP  
Electronic Instruments  
ALERT  
5kΩ  
TACH IN  
FAN  
TO SYSTEM  
SHUTDOWN  
1µF  
OVERT  
MAX6661  
FAN  
DXP  
SC  
SPI CLOCK  
2200pF  
SPI DATA IN  
SDIN  
DOUT  
CS  
SPI DATA OUT  
SPI CHIP SELECT  
DXN  
PENTIUM  
Pin Configuration appears at end of data sheet.  
AGND  
SPI is a trademark of Motorola, Inc.  
PGND  
________________________________________________________________ Maxim Integrated Products  
±
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...19

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 		Serial Switch/Digital Sensor, 12 Bit(s), 2.50Cel, BICMOS, Rectangular, 8 Pin, Surface Moun
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 		温度监测器和PWM风扇控制器
MAX6663AEE MAXIM

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MAX6663AEE+ MAXIM

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 		Analog Voltage Output Sensor, 0.8V Min, 2.6V Max, 1Cel, Rectangular, Surface Mount, 0.150
MAX6663AEE+T MAXIM

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 		Analog Voltage Output Sensor, 1uA, 1Cel, Rectangular, Surface Mount, 0.150 INCH, 0.025 PIT

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