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LM95235DIMM

更新时间： 2024-09-14 11:37:03
品牌 Logo 应用领域
美国国家半导体 - NSC 二极管传感器温度传感器
页数 文件大小 规格书
28页 553K
描述
Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm? Technology

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LM95235DIMM 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：TSSOP8,.19Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：3.97最大精度（摄氏度）：2 Cel
主体宽度：3 mm主体高度：1.09 mm
主体长度或直径：3 mm外壳：PLASTIC
JESD-609代码：e0安装特点：SURFACE MOUNT
位数：11端子数量：8
最大工作电流：0.35 mA最高工作温度：125 °C
最低工作温度：-40 °C输出接口类型：2-WIRE INTERFACE
封装主体材料：PLASTIC/EPOXY封装等效代码：TSSOP8,.19
封装形状/形式：SQUARE电源：3.3 V
传感器/换能器类型：TEMPERATURE SENSOR,SWITCH/DIGITAL OUTPUT,SERIAL子类别：Other Sensors
最大供电电压：3.6 V最小供电电压：3 V
表面贴装：YES技术：CMOS
端子面层：Tin/Lead (Sn/Pb)端接类型：SOLDER

LM95235DIMM 数据手册

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August 15, 2008  
LM95235/LM95235Q  
Precision Remote Diode Temperature Sensor with SMBus  
Interface and TruTherm™ Technology  
Diode Model Selection Bit - MMBT3904 or 65/90 nm  
processor diodes  
Two Formats: −128°C to 127.875°C and  
■
General Description  
The LM95235 is an 11-bit digital temperature sensor with a  
■
2-wire System Management Bus (SMBus) interface and  
0°C to 255.875°C  
TruTherm technology that can monitor the temperature of a  
remote diode as well as its own temperature. The LM95235  
Digital filter for remote channel  
■
Programmable TCRIT and OS thresholds  
■
■
■
■
■
■
can be used to very accurately monitor the temperature of  
external devices such as microprocessors, graphics proces-  
sors, or a diode-connected MMBT3904 transistor. For auto-  
motive applications the LM95235Q is available that is AEC-  
Q100 Grade3 compliant and is manufactured on an  
Automotive Grade Flow. TruTherm BJT (transistor) beta com-  
pensation technology allows the LM95235 to precisely mon-  
itor thermal diodes found in 90 nm and smaller geometry  
processes. LM95235 reports temperature in two different for-  
mats for +127.875°C/-128°C range and 0°C/255°C range.  
The LM95235 T_CRIT and OS outputs are asserted when  
either unmasked channel exceeds its programmed limit and  
can be used to shutdown the system, to turn on the system  
fans, or as a microcontroller interrupt function. The current  
status of the T_CRIT and OS pins can be read back from the  
status registers via the SMBus interface. All limits have a  
shared programmable hysteresis register.  
Programmable shared hysteresis register  
Diode Fault Detection  
Mask, Offset, and Status Registers  
SMBus 2.0 compatible interface, supports TIMEOUT  
Programmable conversion rate for best power  
consumption  
Three-level address pin  
■
■
■
■
Standby mode one-shot conversion control  
Pin-for-pin compatible with the LM86/LM89  
8-pin MSOP package  
Key Specifications  
3.0 V to 3.6 V  
350 µA (typ)  
■ꢀSupply Voltage  
The remote temperature channel of the LM95235 has a pro-  
grammable digital filter. The LM95235 contains a diode model  
selection bit to select between a typical Intel® processor on  
a 65 nm or 90 nm process or MMBT3904, as well as an offset  
register for maximum flexibility and best accuracy.  
■ꢀSupply Current, Conv. Rate = 1 Hz  
■ꢀRemote Diode Temperature Accuracy  
ꢀTA = 25°C to 85°C; TD = 60°C to 100°C  
ꢀTA = 25°C to 85°C; TD = 40°C to 125°C  
■ꢀLocal Temperature Accuracy  
ꢀTA = 25°C to 100°C  
±0.75°C (max)  
±1.5°C (max)  
The LM95235 has a three-level address pin to connect up to  
3 devices to the same SMBus master, that is shared with the  
OS output. The LM95235 has a programmable conversion  
rate register and a standby mode to save power. One con-  
version can be triggered in standby mode by writing to the  
one-shot register.  
±2.0°C (max)  
16 to 0.4 Hz  
■ꢀConversion Rate, Both Channels  
Applications  
Processor/Computer System Thermal Management  
(e.g. Laptops, Desktops, Workstations, Servers)  
Features  
■
Remote and Local temperature channels  
■
■
■
Electronic Test Equipment and Office Electronics  
■
TruTherm BJT beta compensation technology  
LM95235Q is AEC-Q100 Grade 3 compliant and is  
manufactured on an Automotive Grade Flow  
Connection Diagram  
MSOP-8  
20174902  
TOP VIEW  
TruTherm™ is a trademark of National Semiconductor Corporation.  
Intel® is a registered trademark of Intel Corporation.  
Pentium® is a registered trademark of Intel Corporation.  
© 2008 National Semiconductor Corporation  
201749  
www.national.com  
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