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LM75BTP,147 PDF预览

LM75BTP,147

更新时间： 2024-11-27 02:48:19
品牌 Logo 应用领域
恩智浦 - NXP 输出元件传感器换能器
页数 文件大小 规格书
37页 555K
描述
Digital temperature sensor and thermal watchdog

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LM75BTP,147 技术参数

是否Rohs认证： 符合生命周期：Active
零件包装代码：SON包装说明：SOLCC8,.12,20
针数：8Reach Compliance Code：compliant
HTS代码：8542.39.00.01风险等级：1.72
Samacsys Description：NXP - LM75BTP,147 - TEMPERATURE SENSOR, 3DEG C, HWSON-8最大精度（摄氏度）：3 Cel
主体宽度：2 mm主体高度：0.75 mm
主体长度或直径：3 mm外壳：PLASTIC
JESD-609代码：e4安装特点：SURFACE MOUNT
位数：11端子数量：8
最大工作电流：0.3 mA最高工作温度：125 °C
最低工作温度：-55 °C输出接口类型：2-WIRE INTERFACE
封装主体材料：PLASTIC/EPOXY封装等效代码：SOLCC8,.12,20
封装形状/形式：RECTANGULAR电源：3/5 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：5.5 V最小供电电压：2.8 V
表面贴装：YES端子面层：Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag)
端接类型：SOLDERBase Number Matches：1

LM75BTP,147 数据手册

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LM75B  
Digital temperature sensor and thermal watchdog  
Rev. 6.1 — 6 February 2015  
Product data sheet  
1. General description  
The LM75B is a temperature-to-digital converter using an on-chip band gap temperature  
sensor and Sigma-Delta A-to-D conversion technique with an overtemperature detection  
output. The LM75B contains a number of data registers: Configuration register (Conf) to  
store the device settings such as device operation mode, OS operation mode, OS polarity  
and OS fault queue as described in Section 7 “Functional description”; temperature  
register (Temp) to store the digital temp reading, and set-point registers (Tos and Thyst) to  
store programmable overtemperature shutdown and hysteresis limits, that can be  
communicated by a controller via the 2-wire serial I2C-bus interface. The device also  
includes an open-drain output (OS) which becomes active when the temperature exceeds  
the programmed limits. There are three selectable logic address pins so that eight devices  
can be connected on the same bus without address conflict.  
The LM75B can be configured for different operation conditions. It can be set in normal  
mode to periodically monitor the ambient temperature, or in shutdown mode to minimize  
power consumption. The OS output operates in either of two selectable modes:  
OS comparator mode or OS interrupt mode. Its active state can be selected as either  
HIGH or LOW. The fault queue that defines the number of consecutive faults in order to  
activate the OS output is programmable as well as the set-point limits.  
The temperature register always stores an 11-bit two’s complement data giving a  
temperature resolution of 0.125 C. This high temperature resolution is particularly useful  
in applications of measuring precisely the thermal drift or runaway. When the LM75B is  
accessed the conversion in process is not interrupted (that is, the I2C-bus section is totally  
independent of the Sigma-Delta converter section) and accessing the LM75B  
continuously without waiting at least one conversion time between communications will  
not prevent the device from updating the Temp register with a new conversion result. The  
new conversion result will be available immediately after the Temp register is updated.  
The LM75B powers up in the normal operation mode with the OS in comparator mode,  
temperature threshold of 80 C and hysteresis of 75 C, so that it can be used as a  
stand-alone thermostat with those pre-defined temperature set points.  
2. Features and benefits  
Pin-for-pin replacement for industry standard LM75 and LM75A and offers improved  
temperature resolution of 0.125 C and specification of a single part over power supply  
range from 2.8 V to 5.5 V  
I2C-bus interface with up to 8 devices on the same bus  
Power supply range from 2.8 V to 5.5 V  
Temperatures range from 55 C to +125 C  
 
 
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