MIC281
Low-Cost IttyBitty" Thermal Sensor
Micrel Inc. " 2180 Fortune Drive " San Jose, CA 95131 " USA " tel +1 (408) 944-0800 " fax + 1 (408) 474-1000 " http://www.micrel.com
pril 23, 2014
Revision 2.0
General Description
The MIC281 is a digital thermal sensor capable of
measuring the temperature of a remote PN junction. It is
optimized for applications favoring low cost and small size.
The remote junction may be an inexpensive commodity
transistor, e.g., 2N3906, or an embedded thermal diode
such as found in Intel Pentium
?/DIV>
II/III/IV CPUs, AMD
Athlon
?/DIV>
CPUs, and Xilinx Virtex
?/DIV>
FPGAs.
The MIC281 is 100% software and hardware backward
compatible with the MIC280 and features the same
industry-leading noise performance and small size. The
advanced integrating A/D converter and analog front-end
reduce errors due to noise for maximum accuracy and
minimum guardbanding.
A 2-wire SMBus 2.0-compatible serial interface is provided
for host communication. The clock and data pins are 5V-
tolerant regardless of the value of V
DD
. They will not clamp
the bus lines low even if the device is powered down.
Superior performance, low power, and small size make the
MIC281 an excellent choice for cost-sensitive thermal
management applications.
Datasheets and support documentation are available on
Micrels website at: www.micrel.com.
Features
? Remote temperature measurement using embedded
thermal diodes or commodity transistors
? Accurate remote sensing: ?癈 max., 0癈 to 100癈
? Excellent noise rejection
? I
2
C and SMBus 2.0-compatible serial interface
? SMBus timeout to prevent bus lockup
? Voltage tolerant I/Os
? Low power shutdown mode
? Failsafe response to diode faults
? 3.0V to 3.6V power supply range
? Available in IttyBitty SOT23-6 package
Applications
? Desktop, server, and notebook computers
? Set-top boxes
? Game consoles
? Appliances
Typical Application
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MIC2810-1JGMYML TR
IC REG TRPL BUCK/LINEAR 16MLF
MIC284-2BMM TR
IC SUPERVISOR THERM 2ZONE 8-MSOP
MIC3385-1.5YHL TR
IC REG DL BCK/LINEAR SYNC 14-MLF
MIC384-1YMM
IC SUPERVISR THERM LOC/REM 8MSOP
MIC5158BN
IC REG CTRLR SGL FIX/ADJ 14-DIP
MIC5159BM6 TR
IC REG CTRLR SGL POS ADJ SOT23-6
MIC5190BMM TR
IC REG CTRLR SGL POS ADJ 10-MSOP
MIC5191BMM TR
IC REG CTRLR SGL POS ADJ 10-MSOP
相关代理商/技术参数
MIC281-7YM6 TR
功能描述:板上安装温度传感器 Local and Remote Temperature Sensor with I2C Temperature Sensor in SOT23-6 (Lead Free)
RoHS:否 制造商:Omron Electronics 输出类型:Digital 配置: 准确性:+/- 1.5 C, +/- 3 C 温度阈值: 数字输出 - 总线接口:2-Wire, I2C, SMBus 电源电压-最大:5.5 V 电源电压-最小:4.5 V 最大工作温度:+ 50 C 最小工作温度:0 C 关闭: 安装风格: 封装 / 箱体: 设备功能:Temperature and Humidity Sensor
MIC2821-4GJLYML TR
功能描述:直流/直流开关转换器 Single DC/DC + 3 LDOs w/ Indep Enables
RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MIC2821-4GJLYML-TR
功能描述:Handheld/Mobile Devices PMIC 16-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 应用:手持/移动设备 电流 - 电源:- 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商器件封装:16-MLF?（4x4） 标准包装:1
MIC2821-4GMSYML
制造商:Rochester Electronics LLC 功能描述: 制造商:RF Micro Devices Inc 功能描述: 制造商:Micrel Inc 功能描述:
MIC2821-4GMSYML TR
功能描述:直流/直流开关转换器 Single DC/DC + 3 LDOs w/ Indep Enables
RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MIC2821-4GMSYML-TR
功能描述:Handheld/Mobile Devices PMIC 16-MLF? (4x4) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 应用:手持/移动设备 电流 - 电源:- 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商器件封装:16-MLF?（4x4） 标准包装:1
MIC2826-A0YMT TR
功能描述:直流/直流开关调节器 Single 500mA Step-Down and Triple 150mA LDOs with I2C Voltage Control & Sequencing
RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5
MIC2826-A0YMT-TR
功能描述:Processor PMIC 14-TMLF? (2.5x2.5) 制造商:microchip technology 系列:- 包装:剪切带（CT） 零件状态:停产 应用:处理器 电流 - 电源:- 电压 - 电源:2.7 V ~ 5.5 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:14-UFQFN 裸露焊盘，14-TMLF? 供应商器件封装:14-TMLF?（2.5x2.5） 标准包装:1