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CM3109-00SB PDF预览

CM3109-00SB

更新时间： 2024-01-24 16:53:20
品牌 Logo 应用领域
CALMIRCO 总线通信调节器驱动程序和接口存储接口集成电路光电二极管双倍数据速率
页数 文件大小 规格书
12页 543K
描述
2A Sink/Source Regulator for Front Side Bus and DDR Memory Bus Termination

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中文翻译

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CM3109-00SB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：SOIC包装说明：LSOP,
针数：8Reach Compliance Code：unknown
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.84差分输出：NO
接口集成电路类型：OTHER TERMINATORJESD-30 代码：R-PDSO-G8
JESD-609代码：e0长度：4.915 mm
湿度敏感等级：1功能数量：1
信号线数量：1端子数量：8
最高工作温度：85 °C最低工作温度：-45 °C
封装主体材料：PLASTIC/EPOXY封装代码：LSOP
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, LOW PROFILE
认证状态：Not Qualified座面最大高度：1.62 mm
最大供电电压：5.5 V最小供电电压：2.2 V
标称供电电压：2.5 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：TIN LEAD
端子形式：GULL WING端子节距：1.27 mm
端子位置：DUAL宽度：3.9 mm
Base Number Matches：1

CM3109-00SB 数据手册

 浏览型号CM3109-00SB的Datasheet PDF文件第2页浏览型号CM3109-00SB的Datasheet PDF文件第3页浏览型号CM3109-00SB的Datasheet PDF文件第4页浏览型号CM3109-00SB的Datasheet PDF文件第5页浏览型号CM3109-00SB的Datasheet PDF文件第6页浏览型号CM3109-00SB的Datasheet PDF文件第7页 
CM3109  
2A Sink/Source Regulator for Front Side Bus and  
DDR Memory Bus Termination  
Features  
Product Description  
•
Ideal for both PC Front Side Bus and DDR memory  
applications  
Sinks and sources 2A  
Over current protection  
Over temperature protection  
Shutdown function  
Integrated power MOSFETs  
Excellent accuracy (0.5% of load regulation)  
Minimum external components  
8 pin PSOP package  
The CM3109 is a sinking and sourcing regulator specif-  
ically designed for series-parallel bus termination for  
high speed chip set buses as well as DDR memory  
systems. It can source and sink current up to 2A with  
V
TT  
•
•
•
•
•
•
•
•
•
high accuracy of 0.5 %. The V  
output voltage is  
TT  
selectable by V  
SEL and FSBSEL pins. The  
DDQ  
V
SEL pin controls whether the CM3109 is in DDR  
DDQ  
memory mode with V = V  
/2, or in FSB mode. In  
DDQ  
TT  
FSB mode, FSBSEL controls whether V is 1.225V or  
TT  
1.45V. This allows the same chip to be used in two dif-  
ferent circuits on PC motherboards that support both  
Northwood and Prescott processors.  
Lead-free version available  
Applications  
The CM3109 requires no external components to use  
the GMCH Enable signal in Intel chipset or correspond-  
ing signals for other chip sets when powering up the  
PC. For the boards which support Suspend to RAM  
(STR) functionality, CM3109 provides a shutdown (SD)  
•
•
•
•
PC Front Side Bus termination regulator  
DDR Memory termination regulator  
Active termination buses  
Graphics card DDR memory termination  
pin. When SD is set low, V will be in tri-state mode,  
TT  
causing the output to go high impedance. In this mode,  
CM3109 power is saved by significantly reducing the  
quiescent current.  
The CM3109 provides over current and over tempera-  
ture protection. These features protect the chip from  
excessive heating due to high current and high temper-  
ature. The CM3109 is housed in an 8-pin PSOP pack-  
age and is available with optional lead-free finishing.  
Simplified Electrical  
V
V
SEL FSBSEL  
V
DDQ  
CC  
DDQ  
Schematic  
Output  
Select  
Over Temp  
Over Current  
Reference  
SD  
Driver  
V
TT  
V
SENSE  
GND  
© 2004 California Micro Devices Corp. All rights reserved.  
01/15/04 430 N. McCarthy Blvd., Milpitas, CA 95035-5112  
▲
Tel: 408.263.3214  
▲
Fax: 408.263.7846  
▲
www.calmicro.com  
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