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LM95235DIMM/NOPB

更新时间： 2024-11-25 00:54:11
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Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm™ Technology

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LM95235DIMM/NOPB 数据手册

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LM95235  
LM95235-Q1  
www.ti.com  
SNIS142F –APRIL 2006–REVISED MARCH 2013  
Precision Remote Diode Temperature Sensor with SMBus Interface and TruTherm™  
Technology  
Check for Samples: LM95235, LM95235-Q1  
1
FEATURES  
KEY SPECIFICATIONS  
2
•
Remote and Local Temperature Channels  
•
•
•
Supply Voltage 3.0 to 3.6 V  
•
•
TruTherm BJT Beta Compensation Technology  
Supply Current, Conv. Rate = 1 Hz 350 µA (typ)  
Remote Diode Temperature Accuracy  
LM95235Q is AEC-Q100 Grade 3 Compliant  
and is Manufactured on an Automotive Grade  
Flow  
–
TA = 25°C to 85°C; TD = 60°C to 100°C, ±0.75  
°C (max)  
•
•
Diode Model Selection Bit - MMBT3904 or  
65/90-nm Processor Diodes  
–
TA = 25°C to 90°C; TD = 40°C to 125°C, ±1.5  
°C (max)  
Two Formats: -128°C to 127.875°C and 0°C to  
255.875°C  
•
•
Local Temperature Accuracy  
TA = 25°C to 100°C, ±2.0 °C (max)  
Conversion Rate, Both Channels 16 to 0.4 Hz  
–
•
•
•
•
•
•
Digital Filter for Remote Channel  
Programmable TCRIT and OS Thresholds  
Programmable Shared Hysteresis Register  
Diode Fault Detection  
DESCRIPTION  
The LM95235 is an 11-bit digital temperature sensor  
with a 2-wire System Management Bus (SMBus)  
interface and TruTherm technology that can monitor  
the temperature of a remote diode as well as its own  
temperature. The LM95235 can be used to very  
accurately monitor the temperature of external  
Mask, Offset, and Status Registers  
SMBus 2.0 Compatible Interface, Supports  
TIMEOUT  
•
Programmable Conversion Rate for Best  
Power Consumption  
devices  
processors, or  
such  
as  
a
microprocessors,  
diode-connected MMBT3904  
graphics  
•
•
•
Three-Level Address Pin  
transistor. For automotive applications the LM95235Q  
is available that is AEC-Q100 Grade3 compliant and  
is manufactured on an Automotive Grade Flow.  
TruTherm BJT (transistor) beta compensation  
technology allows the LM95235 to precisely monitor  
thermal diodes found in 90 nm and smaller geometry  
processes. LM95235 reports temperature in two  
different formats 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  
Standby Mode One-Shot Conversion Control  
Pin-for-Pin Compatible With the LM86 and  
LM89  
•
8-Pin VSSOP Package  
APPLICATIONS  
•
Processor/Computer System Thermal  
Management (For Example, Laptops,  
Desktops, Workstations, Servers)  
•
Electronic Test Equipment and Office  
Electronics  
limits have  
register.  
a shared programmable hysteresis  
The remote temperature channel of the LM95235 has  
a programmable 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.  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006–2013, Texas Instruments Incorporated  
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