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MAX6650EUB+

更新时间： 2024-09-16 12:10:19
品牌 Logo 应用领域
美信 - MAXIM 调节器风扇监控
页数 文件大小 规格书
25页 284K
描述
Fan-Speed Regulators and Monitors with SMBus/I2C-Compatible Interface

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EVALUATION KIT AVAILABLE  
MAX6650/MAX6651  
Fan-Speed Regulators and Monitors  
2
with SMBus/I C-Compatible Interface  
General Description  
____________________________Features  
♦ Closed/Open-Loop Fan-Speed Control for  
The MAX6650/MAX6651 fan controllers use an  
SMBus/I2C-compatible interface to regulate and moni-  
tor the speed of 5VDC/12VDC brushless fans with built-  
in tachometers. They automatically force the fan’s  
tachometer frequency (fan speed) to match a prepro-  
grammed value in the Fan-Speed Register by using an  
external MOSFET or bipolar transistor to linearly regu-  
late the voltage across the fan. The MAX6650 regulates  
the speed of a single fan by monitoring its tachometer  
output. The MAX6651 also regulates the speed of a sin-  
gle fan, but it contains additional tachometer inputs to  
monitor up to four fans and control them as a single unit  
when they are used in parallel.  
5V/12V Fans  
♦ 2-Wire SMBus/I C-Compatible Interface  
2
♦ Monitors Tachometer Output  
Single Tachometer (MAX6650)  
Up to Four Tachometers (MAX6651)  
♦ Programmable Alert Output  
♦ GPIOs  
♦ Hardware Full-On Override  
♦ Synchronize Multiple Fans  
♦ Four Selectable Slave Addresses  
♦ 3V to 5.5V Supply Voltage  
The MAX6650/MAX6651 provide general-purpose  
input/output (GPIO) pins that serve as digital inputs,  
digital outputs, or various hardware interfaces. Capable  
of sinking 10mA, these open-drain inputs/outputs can  
drive an LED. To add additional hardware control, con-  
figure GPIO1 to fully turn on the fan in case of software  
failure. To generate an interrupt when a fault condition  
is detected, configure GPIO0 to behave as an active-  
low alert output. Synchronize multiple devices by set-  
ting GPIO2 (MAX6651 only) as an internal clock output  
or an external clock input.  
♦ Small Packages  
10-Pin µMAX (MAX6650)  
16-Pin QSOP (MAX6651)  
Ordering Information  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
10 µMAX  
MAX6650EUB  
MAX6650EUB+  
MAX6651EEE  
MAX6651EEE+  
10 µMAX  
16 QSOP  
The MAX6650 is available in a space-saving 10-pin  
µMAX® package, and the MAX6651 is available in a  
small 16-pin QSOP package.  
16 QSOP  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
________________________Applications  
Pin Configurations appear at end of data sheet.  
RAID  
Desktop Computers  
µMAX is a registered trademark of Maxim Integrated Products, Inc.  
Servers  
Networking  
Workstations  
Telecommunications  
Typical Operating Circuit  
V
FAN  
5V OR 12V  
V
V
CC  
CC  
3V TO 5.5V  
10kΩ  
MAX6650  
TACH0  
FB  
SCL  
SDA  
FAN  
2
SMBus/I C  
INTERFACE  
LED  
C
10μF  
ALERT  
COMP  
GPIO0  
GPIO1  
OUT  
ADD  
GND  
FULL ON  
For pricing, delivery, and ordering information, please contact Maxim Direct at  
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.  
19-1784; Rev 5; 12/12  
1234567...25

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MAX6650EUB+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX6650EUB+T MAXIM

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 Fan-Speed Regulators and Monitors with SMBus/I2C-Compatible Interface

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