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MAX6615

更新时间： 2024-11-14 14:57:47
品牌 Logo 应用领域
亚德诺 - ADI 控制器风扇
页数 文件大小 规格书
20页 194K
描述
双通道温度监测器与风扇速度控制器，带有温度调节输入

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MAX6615 数据手册

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19-3713; Rev 2; 10/08  
Dual-Channel Temperature Monitors and  
Fan-Speed Controllers with Thermistor Inputs  
5/MAX16  
General Description  
Features  
The MAX6615/MAX6616 monitor two temperature chan-  
nels, either the internal die temperature and the temper-  
ature of an external thermistor, or the temperatures of  
two external thermistors. The temperature data controls  
a PWM output signal to adjust the speed of a cooling  
fan, thereby minimizing noise when the system is run-  
ning cool, but providing maximum cooling when power  
dissipation increases. The fans’ tachometer output sig-  
nals are monitored by the MAX6615/MAX6616 to detect  
fan failure. If a fan failure is detected, the FAN_FAIL  
output is asserted.  
o Two Thermistor Inputs  
o Two Open-Drain PWM Outputs for Fan-Speed  
Control  
o Local Temperature Sensor  
o Six GPIOs (MAX6616)  
o Programmable Fan-Control Characteristics  
o Controlled PWM Rate-of-Change Ensures  
Unobtrusive Fan-Speed Adjustments  
o Fail-Safe System Protection  
o OT Output for Throttling or Shutdown  
The 2-wire serial interface accepts standard system  
management bus (SMBusTM) write byte, read byte,  
send byte, and receive byte commands to read the  
temperature data and program the alarm thresholds.  
The programmable alarm output can be used to gener-  
ate interrupts, throttle signals, or overtemperature shut-  
down signals.  
o Nine Different Pin-Programmable SMBus  
Addresses  
o 16-Pin and 24-Pin QSOP Packages  
The MAX6616 features six GPIOs to provide additional  
flexibility. All of the GPIOs power-up as inputs, with the  
exception of GPIO0, which powers up as either an input  
or an output as determined by connecting the PRESET  
Ordering Information  
pin to ground or V  
.
PART  
TEMP RANGE  
-40°C to +125°C  
-40°C to +125°C  
PIN-PACKAGE  
16 QSOP  
CC  
MAX6615AEE  
MAX6616AEG  
The MAX6616 is available in a 24-pin QSOP package,  
while the MAX6615 is available in a 16-pin QSOP pack-  
age. Both devices operate from a single-supply voltage  
range of 3.0V to 5.5V, have operating temperature  
ranges of -40°C to +125°C, and consume just 500µA of  
supply current.  
24 QSOP  
Functional Diagram  
FAN_FAIL  
V
CC  
Applications  
Desktop Computers  
Servers  
TACH1  
PWM  
GENERATOR  
AND TACH  
COUNTER  
TH1  
REF  
TH2  
THERMISTORS  
AND LOCAL  
TEMP SENSOR  
PWM1  
TACH2  
PWM2  
Power Supplies  
Networking Equipment  
Workstations  
OT  
SMBus  
INTERFACE  
AND  
SCL  
SDA  
SMBus is a trademark of Intel Corp.  
LOGIC  
GPIO0*  
GPIO5*  
PRESET*  
REGISTERS  
Typical Application Circuits and Pin Configurations appear at  
end of data sheet.  
MAX6615  
MAX6616  
GND  
ADD0  
*MAX6616 ONLY  
ADD1  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
1234567...20

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