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FSCT17A-UH5 PDF预览

FSCT17A-UH5

更新时间： 2024-09-23 23:14:15
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 运动控制电子器件风扇信号电路电动机控制
页数 文件大小 规格书
11页 116K
描述
FAN SPEED CONTROLER

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中文翻译

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FSCT17A-UH5 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SIP包装说明：SIP, SIP5,.04,50TB
针数：5Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84Is Samacsys：N
模拟集成电路 - 其他类型：BRUSHLESS DC MOTOR CONTROLLERJESD-30 代码：R-PSIP-T5
JESD-609代码：e3长度：6.5 mm
功能数量：1端子数量：5
封装主体材料：PLASTIC/EPOXY封装代码：SIP
封装等效代码：SIP5,.04,50TB封装形状：RECTANGULAR
封装形式：IN-LINE峰值回流温度（摄氏度）：NOT SPECIFIED
电源：9/15 V认证状态：Not Qualified
座面最大高度：8.4 mm子类别：Motion Control Electronics
最大供电电流 (Isup)：3 mA最大供电电压 (Vsup)：15 V
最小供电电压 (Vsup)：9 V标称供电电压 (Vsup)：12 V
表面贴装：NO端子面层：Tin (Sn)
端子形式：THROUGH-HOLE端子节距：1.27 mm
端子位置：SINGLE处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：2.3 mmBase Number Matches：1

FSCT17A-UH5 数据手册

 浏览型号FSCT17A-UH5的Datasheet PDF文件第2页浏览型号FSCT17A-UH5的Datasheet PDF文件第3页浏览型号FSCT17A-UH5的Datasheet PDF文件第4页浏览型号FSCT17A-UH5的Datasheet PDF文件第5页浏览型号FSCT17A-UH5的Datasheet PDF文件第6页浏览型号FSCT17A-UH5的Datasheet PDF文件第7页 
FSCTxxA-UH5  
®
A.S.D.TM  
Application Specific Discretes  
FAN SPEED CONTROLER  
APPLICATIONS  
■
■
■
COMPUTER AND SERVER POWER SUPPLY  
TELECOM  
LOW COST VENTILATION (consumer)  
FEATURES  
5
■
■
■
Built in thermal sensor  
Brushless DC fan speed control  
Linear control and regulation of the fan speed  
according to the temperature  
1
IPPAK  
■
Green OFF mode operation with automatic  
turn- ON in case of overtemperature  
Fig. 1: Block Diagram.  
■
■
Voltage limitation above fan stall voltage  
No external NTC required  
ON  
BIAS  
F
BENEFITS  
FSCTxxA-UH5  
■
Low cost integrated fan speed control  
ON/OFF  
HIGH  
VCC  
ON/OFF  
LOW  
■
High integration: only one or two external com-  
ponents  
VOLTAGE  
REF.  
ON  
REGULATION  
HYSTERESIS  
COMPARATOR  
OUT  
■
Reduced acoustic noise because of the linear  
control of the external transistor  
HYST.-EN  
COUT  
=
100nF  
VT  
TEMP.  
SENSOR  
DRIVER  
■
■
■
Power supply noise rejection  
Good thermal coupling with heater  
Reduced ON/OFF oscillation because of large  
hysteresis  
GND  
■
High current capability (base current higher  
than 10 mA)  
■
Higher accuracy than discrete circuit with NTC  
GENERAL DESCRIPTION  
The FSCTxxA-UH5 is a high-integrated low cost fan speed controller suitable for PC desktops, notebooks  
and server power supplies and also all kind of equipments where low cost ventilation system is needed. An  
internal thermal sensor connected to the tab is used to regulate the fan speed. A continuous analog voltage  
proportional to the tab temperature is produced at the OUT terminal and can control linearly an external  
PNP transistor (Fan Transistor) connected in series with a Brushless DC Fan, in order to vary its speed.  
The ON control terminal can be used to select two operation modes. If not connected (high impedance  
state) ON mode is selected by default.  
In Mode ON, the fan speed is regulated according to the tab temperature of the FSCT by adjusting the Vbe  
voltage of the PNP fan Transistor. In low temperature conditions, the fan transistor voltage is limited to  
about 5.5V (for a 12V fan) in order to guarantee a minimum voltage across the fan above its stalling voltage  
and to keep it running (see figure 3).  
This regulation is implemented with a high Fan supply voltage rejection.  
The mode OFF allows to operate in green Mode. The fan is stopped as long as the temperature remains  
below the TON threshold. When the temperature rises above TON the fan is forced to ON and the speed is  
regulated according to the temperature as in the same way as mode ON. When temperature falls below  
TOFF, the fan is automatically turned OFF. The hysteresis has been dimensioned large enough to reduce  
ON/OFF oscillations during the green mode operation.  
September 2003 - Ed: 2A  
1/11  
1234567...11

中文翻译

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