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TC652ABVUA

更新时间： 2024-11-13 12:04:19
品牌 Logo 应用领域
美国微芯 - MICROCHIP 风扇传感器温度传感器控制器
页数 文件大小 规格书
14页 450K
描述
Integrated Temperature Sensor & Brushless DC Fan Controller

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TC652/TC653  
Integrated Temperature Sensor & Brushless DC Fan  
Controller with FanSense™ Detect & Over-Temperature  
Features  
Package Type  
• Integrated Temperature Sensing and Multi-speed  
Fan Control  
MSOP  
V
8
PWM  
DD  
1
• FanSense™ Fan Fault Detect Circuitry  
• Built-in Over-Temperature Alert (T  
)
FAULT  
2
3
4
7 GND  
6
OVER  
TC652  
TC653  
• Temperature Proportional Fan Speed Control for  
Acoustic Noise Reduction and Longer Fan Life  
SHDN  
GND  
T
OVER  
5
SENSE  
• Pulse Width Modulation Output Drive for Cost  
and Power Savings  
• Solid-State Temperature Sensing  
• ±1°C (Typical) Accuracy from 25°C to +70°C  
• 2.8V – 5.5V Operating Range  
General Description  
The TC652/TC653 are integrated temperature sensors  
and brushless DC fan speed controllers with  
FanSense™ technology. The TC652/TC653 measure  
their junction temperature and control the speed of the  
fan based on that temperature, making them especially  
suited for applications in modern electronic equipment.  
The FanSense™ Fan Fault detect circuitry eliminates  
the need for a more expensive 3-wire fan.  
• TC653 includes Auto Fan Shutdown  
• Low Operating Current: 50µA (Typical)  
Applications  
• Thermal Protection For Personal Computers  
• Digital Set-Top Boxes  
• Notebook Computers  
• Data Communications  
• Power Supplies  
Temperature data is converted from the on-chip  
thermal sensing element and translated into  
fractional fan speed from 40% to 100%. A temperature  
selection guide in the data sheet is used to choose the  
low and high temperature limits to control the fan. The  
TC652/TC653 also include a single trip point over  
a
• Projectors  
Related Literature  
temperature alert (T  
) that eliminates the need for  
OVER  
additional temperature sensors. In addition, the TC653  
includes an auto fan shutdown function for additional  
power savings.  
• Application Note: AN771  
Device Selection Table  
The TC652/TC653 are easy to use, require no software  
overhead and are therefore the ideal choice for  
implementing thermal management in a variety of  
systems.  
Part Number  
Package  
Temperature Range  
TC652XXVUA  
TC653XXVUA  
8-Pin MSOP  
8-Pin MSOP  
-40°C to +125°C  
-40°C to +125°C  
X
Temperature  
A
25  
30  
35  
40  
45  
50  
55  
B
C
D
E
F
G
The "X" denotes  
a suffix for temperature threshold settings.  
Contact factory for other temperature ranges.  
2002 Microchip Technology Inc.  
DS21453B-page 1  
1234567...14

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