欢迎访问ic37.com |
会员登录 免费注册
发布采购
所在地: 型号: 精确
  • 批量询价
  •  
  • 供应商
  • 型号
  • 数量
  • 厂商
  • 封装
  • 批号
  • 交易说明
  • 询价
更多
  • LM45CIM3/NOPB图
  • 深圳市高捷芯城科技有限公司

     该会员已使用本站11年以上
  • LM45CIM3/NOPB 现货库存
  • 数量5768 
  • 厂家TI(德州仪器) 
  • 封装SOT-23 
  • 批号23+ 
  • 百分百原装正品,可原型号开票
  • QQ:3007977934QQ:3007977934 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-83062789 QQ:3007977934QQ:3007947087
  • LM45CIM3X/NOPB图
  • 深圳市拓亿芯电子有限公司

     该会员已使用本站12年以上
  • LM45CIM3X/NOPB 现货库存
  • 数量22000 
  • 厂家TI/德州仪器 
  • 封装SOT23 
  • 批号23+ 
  • 只做原装现货假一罚十
  • QQ:2103443489QQ:2103443489 复制
    QQ:2924695115QQ:2924695115 复制
  • 0755-82702619 QQ:2103443489QQ:2924695115
  • LM45CIM3/NOPB图
  • 深圳市正信鑫科技有限公司

     该会员已使用本站12年以上
  • LM45CIM3/NOPB 现货库存
  • 数量8867 
  • 厂家NS 
  • 封装原厂封装 
  • 批号22+ 
  • 原装正品★真实库存★价格优势★欢迎来电洽谈
  • QQ:1686616797QQ:1686616797 复制
    QQ:2440138151QQ:2440138151 复制
  • 0755-22655674 QQ:1686616797QQ:2440138151
  • LM45CIM3X图
  • 北京元坤伟业科技有限公司

     该会员已使用本站17年以上
  • LM45CIM3X 现货库存
  • 数量5000 
  • 厂家NS 
  • 封装SOT-23 
  • 批号16+ 
  • 百分百原装正品,现货库存
  • QQ:857273081QQ:857273081 复制
    QQ:1594462451QQ:1594462451 复制
  • 010-62106431 QQ:857273081QQ:1594462451
  • LM45CIM3X/NOPB图
  • 深圳市能元时代电子有限公司

     该会员已使用本站10年以上
  • LM45CIM3X/NOPB 现货库存
  • 数量92000 
  • 厂家TI/德州仪器 
  • 封装SOT23 
  • 批号24+ 
  • 原装现货假一罚十!可含税长期供货
  • QQ:2885637848QQ:2885637848 复制
    QQ:2885658492QQ:2885658492 复制
  • 0755-84502810 QQ:2885637848QQ:2885658492
  • LM45CIM3X图
  • 深圳市华来深电子有限公司

     该会员已使用本站13年以上
  • LM45CIM3X 现货库存
  • 数量3000 
  • 厂家TI 
  • 封装SOT23 
  • 批号20+ 
  • 受权代理!全新原装现货特价热卖!
  • QQ:1258645397QQ:1258645397 复制
    QQ:876098337QQ:876098337 复制
  • 0755-83238902 QQ:1258645397QQ:876098337
  • LM45CIM3/NOPB图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • LM45CIM3/NOPB 现货库存
  • 数量1000 
  • 厂家TI 
  • 封装SOT-23 (DBZ) 
  • 批号新批次 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • LM45CIM3X图
  • 深圳市澳亿芯电子

     该会员已使用本站13年以上
  • LM45CIM3X 优势库存
  • 数量4760 
  • 厂家TI/德州仪器 
  • 封装SOT23-3 
  • 批号19+ 
  • QQ:634389814QQ:634389814 复制
  • 0755-83227826 QQ:634389814
  • LM45CIM3图
  • 深圳市拓森弘电子有限公司

     该会员已使用本站1年以上
  • LM45CIM3
  • 数量5300 
  • 厂家TI(德州仪器) 
  • 封装TO-236-3,SC-59,SOT-23-3 
  • 批号21+ 
  • 全新原装正品,库存现货实报
  • QQ:1300774727QQ:1300774727 复制
  • 13714410484 QQ:1300774727
  • LM45CIM3/NOPB图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • LM45CIM3/NOPB
  • 数量13880 
  • 厂家TI/德州仪器 
  • 封装SOT-23-3 
  • 批号21+ 
  • 公司只售原装 支持实单
  • QQ:2881495751QQ:2881495751 复制
  • 0755-88917743 QQ:2881495751
  • LM45CIM3图
  • 深圳市芯福林电子有限公司

     该会员已使用本站15年以上
  • LM45CIM3
  • 数量65000 
  • 厂家NS 
  • 封装SOT23-3 
  • 批号23+ 
  • 真实库存全新原装正品!代理此型号
  • QQ:2881495753QQ:2881495753 复制
  • 0755-23605827 QQ:2881495753
  • LM45CIM3/NOPB图
  • 深圳市旺能芯科技有限公司

     该会员已使用本站4年以上
  • LM45CIM3/NOPB
  • 数量15000 
  • 厂家TI/德州仪器 
  • 封装SOT23-3 
  • 批号22+ 
  • 深圳全新原装库存现货
  • QQ:2881495751QQ:2881495751 复制
  • 13602549709 QQ:2881495751
  • LM45CIM3图
  • 深科创(香港)科技有限公司

     该会员已使用本站16年以上
  • LM45CIM3
  • 数量5590 
  • 厂家Texas Instruments 
  • 封装原厂原装 
  • 批号19+ 
  • 只做原装,只有原装
  • QQ:3350142453QQ:3350142453 复制
    QQ:545433074QQ:545433074 复制
  • 83247290 QQ:3350142453QQ:545433074
  • LM45CIM3X图
  • 千层芯半导体(深圳)有限公司

     该会员已使用本站9年以上
  • LM45CIM3X
  • 数量25000 
  • 厂家TI 
  • 封装SOT-23 
  • 批号2018+ 
  • TI一级代理商原装进口现货
  • QQ:2685694974QQ:2685694974 复制
    QQ:2593109009QQ:2593109009 复制
  • 0755-83978748,0755-23611964,13760152475 QQ:2685694974QQ:2593109009
  • LM45CIM3X图
  • 深圳市凯鑫跃电子有限公司

     该会员已使用本站13年以上
  • LM45CIM3X
  • 数量18000 
  • 厂家NATIONAL 
  • 封装SOT-23 
  • 批号2023+PB 
  • 进口全新原装无铅房间现货
  • QQ:2885514887QQ:2885514887 复制
  • 0755-83987779 QQ:2885514887
  • LM45CIM3X图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站12年以上
  • LM45CIM3X
  • 数量5000 
  • 厂家NS 
  • 封装SOT-23-3 
  • 批号25+ 
  • 全新原装,公司现货销售!
  • QQ:1245773710QQ:1245773710 复制
    QQ:867789136QQ:867789136 复制
  • 0755-82772189 QQ:1245773710QQ:867789136
  • LM45CIM3图
  • 柒号芯城电子商务(深圳)有限公司

     该会员已使用本站13年以上
  • LM45CIM3
  • 数量700000 
  • 厂家TI 
  • 封装TO-236-3,SC-59,SOT-23-3 
  • 批号2023+ 
  • 柒号芯城跟原厂的距离只有0.07公分
  • QQ:2881677436QQ:2881677436 复制
    QQ:2881620402QQ:2881620402 复制
  • 18922803401 QQ:2881677436QQ:2881620402
  • LM45CIM3/NOPB图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • LM45CIM3/NOPB
  • 数量9412 
  • 厂家TI/NS 
  • 封装SOT23 
  • 批号24+ 
  • 全新原装现货,欢迎询购!
  • QQ:1950791264QQ:1950791264 复制
    QQ:221698708QQ:221698708 复制
  • 0755-83222787 QQ:1950791264QQ:221698708
  • LM45CIM3X图
  • 深圳市恒益昌科技有限公司

     该会员已使用本站6年以上
  • LM45CIM3X
  • 数量3200 
  • 厂家NS 
  • 封装SOP 
  • 批号25+ 
  • 全新原装正品现货
  • QQ:3336148967QQ:3336148967 复制
    QQ:974337758QQ:974337758 复制
  • 0755-82723761 QQ:3336148967QQ:974337758
  • LM45CIM3X图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站16年以上
  • LM45CIM3X
  • 数量3500 
  • 厂家NS 
  • 封装SOT23/3 
  • 批号25+ 
  • 全新原装现货特价销售!
  • QQ:867789136QQ:867789136 复制
    QQ:1245773710QQ:1245773710 复制
  • 0755-82723761 QQ:867789136QQ:1245773710
  • LM45CIM3X-NOPB图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站12年以上
  • LM45CIM3X-NOPB
  • 数量4500 
  • 厂家NS 
  • 封装SOT 
  • 批号25+ 
  • 全新原装正品现货
  • QQ:867789136QQ:867789136 复制
    QQ:1245773710QQ:1245773710 复制
  • 0755-82772189 QQ:867789136QQ:1245773710
  • LM45CIM3X图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站15年以上
  • LM45CIM3X
  • 数量98000 
  • 厂家NATIONAL 
  • 封装SOT-23 
  • 批号24+ 
  • 假一罚十,原装进口正品现货供应,价格优势。
  • QQ:198857245QQ:198857245 复制
  • 0755-82865294 QQ:198857245
  • LM45CIM3图
  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • LM45CIM3
  • 数量584 
  • 厂家NS/国半 
  • 封装NA/ 
  • 批号23+ 
  • 优势代理渠道,原装正品,可全系列订货开增值税票
  • QQ:3007977934QQ:3007977934 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-82546830 QQ:3007977934QQ:3007947087
  • LM45CIM3图
  • 集好芯城

     该会员已使用本站13年以上
  • LM45CIM3
  • 数量13577 
  • 厂家NS/国半 
  • 封装SOT23-3 
  • 批号最新批次 
  • 原装原厂 现货现卖
  • QQ:3008092965QQ:3008092965 复制
    QQ:3008092965QQ:3008092965 复制
  • 0755-83239307 QQ:3008092965QQ:3008092965
  • LM45CIM3图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • LM45CIM3
  • 数量15372 
  • 厂家TI 
  • 封装 
  • 批号23+ 
  • 全新原装正品现货热卖
  • QQ:2885348339QQ:2885348339 复制
    QQ:2885348317QQ:2885348317 复制
  • 0755-82519391 QQ:2885348339QQ:2885348317
  • LM45CIM3X图
  • 深圳市华科泰电子商行

     该会员已使用本站13年以上
  • LM45CIM3X
  • 数量58000 
  • 厂家NSC 
  • 封装SOT23 
  • 批号00+ 
  • 绝对原装现货特价
  • QQ:405945546QQ:405945546 复制
    QQ:1439873477QQ:1439873477 复制
  • 0755-82567800 QQ:405945546QQ:1439873477
  • LM45CIM3X图
  • 深圳市硅诺电子科技有限公司

     该会员已使用本站8年以上
  • LM45CIM3X
  • 数量45034 
  • 厂家NSC 
  • 封装SOT23 
  • 批号17+ 
  • 原厂指定分销商,有意请来电或QQ洽谈
  • QQ:1091796029QQ:1091796029 复制
    QQ:916896414QQ:916896414 复制
  • 0755-82772151 QQ:1091796029QQ:916896414
  • LM45CIM3X图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • LM45CIM3X
  • 数量15830 
  • 厂家NS 
  • 封装SOT-23 
  • 批号23+ 
  • 全新原装正品现货热卖
  • QQ:2885348317QQ:2885348317 复制
    QQ:2885348339QQ:2885348339 复制
  • 0755-83209630 QQ:2885348317QQ:2885348339
  • LM45CIM3图
  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • LM45CIM3
  • 数量28693 
  • 厂家NS 
  • 封装SOT23 
  • 批号2023+ 
  • 绝对原装正品全新深圳进口现货,优质渠道供应商!
  • QQ:1002316308QQ:1002316308 复制
    QQ:515102657QQ:515102657 复制
  • 美驻深办0755-83777708“进口原装正品专供” QQ:1002316308QQ:515102657
  • LM45CIM3/NOPB图
  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • LM45CIM3/NOPB
  • 数量12500 
  • 厂家NSC 
  • 封装SOT23 
  • 批号2023+ 
  • 绝对原装全新正品现货/优势渠道商、原盘原包原盒
  • QQ:364510898QQ:364510898 复制
    QQ:515102657QQ:515102657 复制
  • 0755-83777708“进口原装正品专供” QQ:364510898QQ:515102657
  • LM45CIM3XNOPB图
  • 北京首天国际有限公司

     该会员已使用本站16年以上
  • LM45CIM3XNOPB
  • 数量10082 
  • 厂家NATIONAL 
  • 封装原厂封装 
  • 批号2024+ 
  • 百分百原装正品,现货库存
  • QQ:528164397QQ:528164397 复制
    QQ:1318502189QQ:1318502189 复制
  • 010-62565447 QQ:528164397QQ:1318502189
  • LM45CIM3X图
  • 深圳市卓越微芯电子有限公司

     该会员已使用本站12年以上
  • LM45CIM3X
  • 数量6500 
  • 厂家NSC 
  • 封装SOT23 
  • 批号20+ 
  • 百分百原装正品 真实公司现货库存 本公司只做原装 可开13%增值税发票,支持样品,欢迎来电咨询!
  • QQ:1437347957QQ:1437347957 复制
    QQ:1205045963QQ:1205045963 复制
  • 0755-82343089 QQ:1437347957QQ:1205045963
  • LM45CIM3X   SOT23-T4C图
  • 北京中其伟业科技有限公司

     该会员已使用本站16年以上
  • LM45CIM3X SOT23-T4C
  • 数量25490 
  • 厂家National 
  • 封装SOT-23 
  • 批号16+ 
  • 特价,原装正品,绝对公司现货库存,原装特价!
  • QQ:2880824479QQ:2880824479 复制
  • 010-62104891 QQ:2880824479
  • LM45CIM3X/NOPB图
  • 深圳市羿芯诚电子有限公司

     该会员已使用本站7年以上
  • LM45CIM3X/NOPB
  • 数量8800 
  • 厂家TI/德州仪器 
  • 封装SOT23 
  • 批号新年份 
  • 羿芯诚只做原装,原厂渠道,价格优势可谈!
  • QQ:2853992132QQ:2853992132 复制
  • 0755-82570683 QQ:2853992132
  • LM45CIM3/NOPB图
  • 北京元坤伟业科技有限公司

     该会员已使用本站17年以上
  • LM45CIM3/NOPB
  • 数量5000 
  • 厂家NS 
  • 封装 
  • 批号2024+ 
  • 百分百原装正品,现货库存
  • QQ:857273081QQ:857273081 复制
    QQ:1594462451QQ:1594462451 复制
  • 010-62104891 QQ:857273081QQ:1594462451
  • LM45CIM3图
  • 深圳市惊羽科技有限公司

     该会员已使用本站11年以上
  • LM45CIM3
  • 数量9417 
  • 厂家TI-德州仪器 
  • 封装SOT-23-3 
  • 批号▉▉:2年内 
  • ▉▉¥7.2元一有问必回一有长期订货一备货HK仓库
  • QQ:43871025QQ:43871025 复制
  • 131-4700-5145---Q-微-恭-候---有-问-秒-回 QQ:43871025
  • LM45CIM3X图
  • 深圳市惊羽科技有限公司

     该会员已使用本站11年以上
  • LM45CIM3X
  • 数量83500 
  • 厂家TI-德州仪器 
  • 封装SOT-23-3 
  • 批号▉▉:2年内 
  • ▉▉¥10一一有问必回一一有长期订货一备货HK仓库
  • QQ:43871025QQ:43871025 复制
  • 131-4700-5145---Q-微-恭-候---有-问-秒-回 QQ:43871025

产品型号LM45CIM3的概述

芯片LM45CIM3的概述 LM45CIM3是一款高精度、低功耗的温度传感器芯片,广泛应用于微处理器的温度监测及相关电子设备的温度控制系统中。该芯片的设计旨在提供可靠的温度测量,其输出形式为线性电压信号,便于与模拟或数字电路进行接口。LM45CIM3不仅兼具良好的性能和稳定性,而且还具有较为简洁的电路设计,适合不同的温度测量应用。 芯片LM45CIM3的详细参数 LM45CIM3的主要技术参数如下: - 温度测量范围: -40°C至+125°C - 灵敏度: 20 mV/°C - 精度: ±0.5°C @ 25°C - 供电电压: 2.8V至12V - 功耗: 60µA(典型值) - 输出类型: 模拟电压输出 - 工作温度范围: -40°C至+125°C - 封装类型: SOIC-8 这些参数显示出LM45CIM3在多种环境下的广泛适用性,尤其是在高温和低温条件下都保持了较高的准确度。...

产品型号LM45CIM3的Datasheet PDF文件预览

July 1999  
LM45  
SOT-23 Precision Centigrade Temperature Sensors  
n Portable Medical Instruments  
n HVAC  
The LM45 series are precision integrated-circuit temperature  
n Power Supply Modules  
General Description  
sensors, whose output voltage is linearly proportional to the  
Celsius (Centigrade) temperature. The LM45 does not re-  
quire any external calibration or trimming to provide accura-  
n Disk Drives  
n Computers  
n Automotive  
±
±
cies of 2˚C at room temperature and 3˚C over a full −20 to  
+100˚C temperature range. Low cost is assured by trimming  
and calibration at the wafer level. The LM45’s low output im-  
pedance, linear output, and precise inherent calibration  
make interfacing to readout or control circuitry especially  
easy. It can be used with a single power supply, or with plus  
and minus supplies. As it draws only 120 µA from its supply,  
it has very low self-heating, less than 0.2˚C in still air. The  
LM45 is rated to operate over a −20˚ to +100˚C temperature  
range.  
Features  
n Calibrated directly in ˚ Celsius (Centigrade)  
n Linear + 10.0 mV/˚C scale factor  
±
n
3˚C accuracy guaranteed  
n Rated for full −20˚ to +100˚C range  
n Suitable for remote applications  
n Low cost due to wafer-level trimming  
n Operates from 4.0V to 10V  
n Less than 120 µA current drain  
n Low self-heating, 0.20˚C in still air  
Applications  
n Battery Management  
n FAX Machines  
n Printers  
±
n Nonlinearity only 0.8˚C max over temp  
n Low impedance output, 20for 1 mA load  
Connection Diagram  
SOT-23  
Order  
Device  
Marking  
T4B  
SOT-23  
Number  
Supplied As  
LM45BIM3  
LM45BIM3X  
LM45CIM3  
LM45CIM3X  
1000 Units on Tape and Reel  
3000 Units on Tape and Reel  
1000 Units on Tape and Reel  
3000 Units on Tape and Reel  
T4B  
T4C  
T4C  
DS011754-1  
Top View  
See NS Package Number MA03B  
Typical Applications  
DS011754-3  
DS011754-4  
FIGURE 1. Basic Centigrade Temperature  
Sensor (+2.5˚C to +100˚C)  
=
Choose R  
−V /50 µA  
S
1
=
V
OUT  
V
OUT  
(10 mV/˚C x Temp ˚C)  
+1,000 mV at +100˚C  
=
=
=
+250 mV at +25˚C  
−200 mV at −20˚C  
FIGURE 2. Full-Range Centigrade  
Temperature Sensor (−20˚C to +100˚C)  
© 1999 National Semiconductor Corporation  
DS011754  
www.national.com  
Absolute Maximum Ratings (Note 1)  
Operating Ratings (Note 1)  
Specified Temperature Range  
(Note 4)  
Supply Voltage  
Output Voltage  
+12V to −0.2V  
T
to TMAX  
+V + 0.6V to  
S
MIN  
−1.0V  
LM45B, LM45C  
−20˚C to +100˚C  
Output Current  
10 mA  
Operating Temperature Range  
LM45B, LM45C  
Storage Temperature  
Lead Temperature:  
−65˚C to +150˚C  
−40˚C to +125˚C  
+4.0V to +10V  
Supply Voltage Range (+VS)  
SOT Package (Note 2):  
Vapor Phase (60 seconds)  
Infrared (15 seconds)  
215˚C  
220˚C  
ESD Susceptibility (Note 3):  
Human Body Model  
Machine Model  
2000V  
250V  
Electrical Characteristics  
=
=
Unless otherwise noted, these specifications apply for +VS +5Vdc and ILOAD +50 µA, in the circuit of Figure 2. These  
=
=
=
J
specifications also apply from +2.5˚C to TMAX in the circuit of Figure 1 for +VS +5Vdc. Boldface limits apply for TA  
T
=
=
TMIN to TMAX ; all other limits TA TJ +25˚C, unless otherwise noted.  
Parameter Conditions  
LM45B  
Typical Limit  
(Note 5)  
LM45C  
Typical Limit  
(Note 5)  
Units  
(Limit)  
=
±
±
±
±
±
±
±
±
Accuracy  
(Note 6)  
T A +25˚C  
2.0  
3.0  
3.0  
0.8  
3.0  
4.0  
4.0  
0.8  
˚C (max)  
˚C (max)  
˚C (max)  
˚C (max)  
=
T A TMAX  
=
T A TMIN  
Nonlinearity  
(Note 7)  
T
T
MINTATMAX  
Sensor Gain  
MINTATMAX  
+9.7  
+9.7  
mV/˚C (min)  
mV/˚C (max)  
(Average Slope)  
+10.3  
+10.3  
±
±
35  
Load Regulation (Note 8)  
0I L+1 mA  
35  
mV/mA  
(max)  
±
±
0.80  
Line Regulation  
+4.0V+V S+10V  
0.80  
mV/V (max)  
mV/V (max)  
µA (max)  
±
±
1.2  
(Note 8)  
1.2  
Quiescent Current  
(Note 9)  
+4.0V+V S+10V, +25˚C  
+4.0V+V S+10V  
4.0V+V S10V  
120  
160  
2.0  
120  
160  
2.0  
µA (max)  
Change of Quiescent  
Current (Note 9)  
µA (max)  
Temperature Coefficient  
of Quiescent Current  
Minimum Temperature  
for Rated Accuracy  
Long Term Stability (Note 10)  
+2.0  
+2.0  
µA/˚C  
˚C (min)  
˚C  
In circuit of  
+2.5  
+2.5  
=
Figure 1, IL  
=
0
±
±
0.12  
T
TMAX, for 1000 hours  
0.12  
J
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating  
the device beyond its rated operating conditions.  
Note 2: See AN-450 “Surface Mounting Methods and Their Effect on Product Reliability” or the section titled “Surface Mount” found in a current National Semicon-  
ductor Linear Data Book for other methods of soldering surface mount devices.  
Note 3: Human body model, 100 pF discharged through a 1.5 kresistor. Machine model, 200 pF discharged directly into each pin.  
Note 4: Thermal resistance of the SOT-23 package is 260˚C/W, junction to ambient when attached to a printed circuit board with 2 oz. foil as shown in Figure 3.  
Note 5: Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).  
Note 6: Accuracy is defined as the error between the output voltage and 10 mv/˚C times the device’s case temperature, at specified conditions of voltage, current,  
and temperature (expressed in ˚C).  
Note 7: Nonlinearity is defined as the deviation of the output-voltage-versus-temperature curve from the best-fit straight line, over the device’s rated temperature  
range.  
Note 8: Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output due to heating effects can be com-  
puted by multiplying the internal dissipation by the thermal resistance.  
Note 9: Quiescent current is measured using the circuit of Figure 1.  
Note 10: For best long-term stability, any precision circuit will give best results if the unit is aged at a warm temperature, and/or temperature cycled for at least 46  
hours before long-term life test begins. This is especially true when a small (Surface-Mount) part is wave-soldered; allow time for stress relaxation to occur.  
www.national.com  
2
Typical Performance Characteristics To generate these curves the LM45 was mounted to a printed  
circuit board as shown in Figure 3.  
Thermal Resistance  
Junction to Air  
Thermal Response in Still Air  
with Heat Sink (Figure 3)  
Thermal Time Constant  
DS011754-24  
DS011754-25  
DS011754-26  
Thermal Response  
in Stirred Oil Bath  
with Heat Sink  
Quiescent Current  
vs Temperature  
(In Circuit of Figure 1)  
Start-Up Voltage  
vs Temperature  
DS011754-27  
DS011754-28  
DS011754-29  
Quiescent Current  
vs Temperature  
(In Circuit of Figure 2)  
Accuracy vs Temperature  
(Guaranteed)  
Noise Voltage  
DS011754-30  
DS011754-31  
DS011754-32  
3
www.national.com  
Typical Performance Characteristics To generate these curves the LM45 was mounted to a printed  
circuit board as shown in Figure 3. (Continued)  
Supply Voltage  
vs Supply Current  
Start-Up Response  
DS011754-34  
DS011754-33  
DS011754-23  
FIGURE 3. Printed Circuit Board Used for Heat Sink to Generate All Curves.  
1
2  
" Square Printed Circuit Board with 2 oz. Foil or Similar  
as Humiseal and epoxy paints or dips are often used to in-  
sure that moisture cannot corrode the LM45 or its connec-  
tions.  
Applications  
The LM45 can be applied easily in the same way as other  
integrated-circuit temperature sensors. It can be glued or ce-  
mented to a surface and its temperature will be within about  
0.2˚C of the surface temperature.  
Temperature Rise of LM45 Due to Self-Heating  
(Thermal Resistance)  
SOT-23  
SOT-23  
This presumes that the ambient air temperature is almost the  
same as the surface temperature; if the air temperature were  
much higher or lower than the surface temperature, the ac-  
tual temperature of the LM45 die would be at an intermediate  
temperature between the surface temperature and the air  
temperature.  
*
**  
no heat sink  
small heat fin  
Still air  
450˚C/W  
260˚C/W  
180˚C/W  
Moving air  
*
Part soldered to 30 gauge wire.  
1
*
*
Heat sink used is  
2
” square printed circuit board with 2 oz. foil with part at-  
To ensure good thermal conductivity the backside of the  
LM45 die is directly attached to the GND pin. The lands and  
traces to the LM45 will, of course, be part of the printed cir-  
cuit board, which is the object whose temperature is being  
measured. These printed circuit board lands and traces will  
not cause the LM45s temperature to deviate from the de-  
sired temperature.  
tached as shown in Figure 3.  
Alternatively, the LM45 can be mounted inside a sealed-end  
metal tube, and can then be dipped into a bath or screwed  
into a threaded hole in a tank. As with any IC, the LM45 and  
accompanying wiring and circuits must be kept insulated and  
dry, to avoid leakage and corrosion. This is especially true if  
the circuit may operate at cold temperatures where conden-  
sation can occur. Printed-circuit coatings and varnishes such  
www.national.com  
4
Typical Applications  
CAPACITIVE LOADS  
Like most micropower circuits, the LM45 has a limited ability  
to drive heavy capacitive loads. The LM45 by itself is able to  
drive 500 pF without special precautions. If heavier loads are  
anticipated, it is easy to isolate or decouple the load with a  
resistor; see Figure 4. Or you can improve the tolerance of  
capacitance with  
a series R-C damper from output to  
ground; see Figure 5.  
Any linear circuit connected to wires in a hostile environment  
can have its performance affected adversely by intense elec-  
tromagnetic sources such as relays, radio transmitters, mo-  
tors with arcing brushes, SCR transients, etc, as its wiring  
can act as a receiving antenna and its internal junctions can  
act as rectifiers. For best results in such cases, a bypass ca-  
pacitor from VIN to ground and a series R-C damper such as  
75in series with 0.2 or 1 µF from output to ground, as  
shown in Figure 5, are often useful.  
DS011754-14  
FIGURE 7. 4-to-20 mA Current Source (0˚C to +100˚C)  
DS011754-8  
FIGURE 4. LM45 with Decoupling from Capacitive Load  
DS011754-9  
FIGURE 5. LM45 with R-C Damper  
DS011754-15  
FIGURE 8. Fahrenheit Thermometer  
DS011754-12  
FIGURE 6. Temperature Sensor,  
Single Supply, −20˚C to +100˚C  
DS011754-16  
FIGURE 9. Centigrade Thermometer (Analog Meter)  
5
www.national.com  
Typical Applications (Continued)  
DS011754-17  
FIGURE 10. Expanded Scale Thermometer  
(50˚ to 80˚ Fahrenheit, for Example Shown)  
DS011754-18  
FIGURE 11. Temperature To Digital Converter (Serial Output) (+128˚C Full Scale)  
DS011754-19  
®
FIGURE 12. Temperature To Digital Converter (Parallel TRI-STATE Outputs for  
Standard Data Bus to µP Interface) (128˚C Full Scale)  
www.national.com  
6
Typical Applications (Continued)  
DS011754-20  
=
*
1% or 2% film resistor  
=
-Trim R for V 3.075V  
B
B
=
-Trim R for V 1.955V  
C
C
=
-Trim R for V 0.075V + 100mV/˚C x T  
ambient  
A
A
=
-Example, V 2.275V at 22˚C  
A
FIGURE 13. Bar-Graph Temperature Display (Dot Mode)  
DS011754-21  
FIGURE 14. LM45 With Voltage-To-Frequency Converter And Isolated Output  
(2.5˚C to +100˚C; 25 Hz to 1000 Hz)  
7
www.national.com  
Block Diagram  
DS011754-22  
www.national.com  
8
Physical Dimensions inches (millimeters) unless otherwise noted  
SOT-23 Molded Small Outline Transistor Package (M3)  
Order Number LM45BIM3, LM45BIM3X, LM45CIM3 or LM45CIM3X  
NS Package Number MA03B  
LIFE SUPPORT POLICY  
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT  
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL  
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:  
1. Life support devices or systems are devices or  
systems which, (a) are intended for surgical implant  
into the body, or (b) support or sustain life, and  
whose failure to perform when properly used in  
accordance with instructions for use provided in the  
labeling, can be reasonably expected to result in a  
significant injury to the user.  
2. A critical component is any component of a life  
support device or system whose failure to perform  
can be reasonably expected to cause the failure of  
the life support device or system, or to affect its  
safety or effectiveness.  
National Semiconductor  
Corporation  
Americas  
Tel: 1-800-272-9959  
Fax: 1-800-737-7018  
Email: support@nsc.com  
National Semiconductor  
Europe  
National Semiconductor  
Asia Pacific Customer  
Response Group  
Tel: 65-2544466  
Fax: 65-2504466  
National Semiconductor  
Japan Ltd.  
Tel: 81-3-5639-7560  
Fax: 81-3-5639-7507  
Fax: +49 (0) 1 80-530 85 86  
Email: europe.support@nsc.com  
Deutsch Tel: +49 (0) 1 80-530 85 85  
English Tel: +49 (0) 1 80-532 78 32  
Français Tel: +49 (0) 1 80-532 93 58  
Italiano Tel: +49 (0) 1 80-534 16 80  
Email: sea.support@nsc.com  
www.national.com  
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.  
配单直通车
LM45CIM3产品参数
型号:LM45CIM3
是否Rohs认证: 不符合
生命周期:Transferred
IHS 制造商:NATIONAL SEMICONDUCTOR CORP
包装说明:SOT-23, 3 PIN
Reach Compliance Code:not_compliant
ECCN代码:EAR99
HTS代码:8542.39.00.01
风险等级:5.25
最大精度(摄氏度):4 Cel
主体宽度:1.3 mm
主体高度:0.92 mm
主体长度或直径:2.92 mm
外壳:PLASTIC
JESD-609代码:e0
线性度(Cel):0.8 Cel
安装特点:SURFACE MOUNT
端子数量:3
最高工作温度:100 °C
最低工作温度:-20 °C
最大输出电压:1 V
最小输出电压:-0.2 V
封装主体材料:PLASTIC/EPOXY
封装等效代码:TO-236
封装形状/形式:RECTANGULAR
电源:4/10 V
传感器/换能器类型:TEMPERATURE SENSOR,ANALOG,VOLTAGE OUTPUT
子类别:Other Sensors
最大供电电压:10 V
最小供电电压:4 V
表面贴装:YES
技术:BIPOLAR
温度系数:POSITIVE ppm/ °C
端子面层:Tin/Lead (Sn/Pb)
端接类型:SOLDER
  •  
  • 供货商
  • 型号 *
  • 数量*
  • 厂商
  • 封装
  • 批号
  • 交易说明
  • 询价
批量询价选中的记录已选中0条,每次最多15条。
 复制成功!