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LM77CIM3NSN/a29avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIM-3 |LM77CIM3NSCN/a312avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIM-3 |LM77CIM3NSN/a7100avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIM-5 |LM77CIM5NSN/a650avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIM-5 |LM77CIM5N/a438avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIM-5 |LM77CIM5NSCN/a17avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMM-3 |LM77CIMM3NSN/a4924avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMM-3 |LM77CIMM3NSCN/a510avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMM-3 |LM77CIMM3NATIONALN/a8000avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMM-5 |LM77CIMM5NASN/a1000avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMMX-3 |LM77CIMMX3NSN/a3292avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMX-3 |LM77CIMX3NSN/a2439avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77CIMX-5 |LM77CIMX5NSN/a1724avai9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface


LM77CIMM-3 ,9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interfaceapplications. Theseinclude thermal management and protection
LM77CIMM-3 ,9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire InterfacePin DescriptionLabel Pin # Function Typical ConnectionSDA 1 Serial Bi-Directional Data Line. Open D ..
LM77CIMM-3 ,9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire InterfacePin DescriptionLabel Pin # Function Typical ConnectionSDA 1 Serial Bi-Directional Data Line. Open D ..
LM77CIMM-3/NOPB ,?1.5?C Temperature Sensor with Alert Function and I2C/SMBus Interface 8-VSSOP -55 to 125Block DiagramFigure 1.Connection DiagramFigure 2. SOIC-8 or VSSOP PackageSee Package Number D0008A ..
LM77CIMM-5 ,9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire InterfaceFeaturesn Window comparison simplifies design of ACPIThe LM77 is a digital temperature sensor and t ..
LM77CIMMX-3 ,9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interfaceapplications.n Personal Computersn Office Electronicsn Electronic Test Equipmentn Automotiven HVAC2 ..
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LP3985IM5X-285 ,Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage RegulatorGeneral Description4.8V and 5.0V output voltages. For other output voltageThe LP3985 is designed fo ..
LP3985IM5X-285 NOPB ,Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator 5-SOT-23 -40 to 125Maximum Ratings may cause permanent damage to the device. These are stress ratingsonly, which do no ..
LP3985IM5X-3.0 ,Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage RegulatorFeaturesPower supply rejection is better than 50 dB at low frequen-n Miniature 5-I/O micro SMD and ..
LP3985IM5X-3.1 ,Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage RegulatorLP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage RegulatorJune 2004LP3985Micropowe ..
LP3985IM5X-3.2 ,Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage RegulatorFeaturesPower supply rejection is better than 50 dB at low frequen-n Miniature 5-I/O micro SMD and ..


LM77CIM3-LM77CIM-3-LM77CIM-5-LM77CIMM-3-LM77CIMM-5-LM77CIMMX-3-LM77CIMX-3-LM77CIMX-5
9-Bit + Sign Digital Temperature Sensor and Thermal Window Comparator with Two-Wire Interface
LM77
9-Bit + Sign Digital Temperature Sensor and Thermal
Window Comparator with Two-Wire Interface
General Description

The LM77isa digital temperature sensor and thermal win-
dow comparator withanI2C™ Serial Bus interface. The
window-comparator architectureofthe LM77 eases the de-
signof temperature control systems conformingtothe ACPI
(Advanced Configuration and Power Interface) specification
for personal computers. The open-drain Interrupt (INT) out-
put becomes active whenever temperature goes outsidea
programmable window, whilea separate Critical Tempera-
ture Alarm (T_CRIT_A) output becomes active when the
temperature exceedsa programmable critical limit. The INT
output can operatein eithera comparatoror event mode,
while the T_CRIT_A output operatesin comparator mode
only.
The host can program boththe upper and lower limitsofthe
windowas wellas the critical temperature limit. Program-
mable hysterisisas wellasa fault queue are availableto
minimize false tripping. Two pins (A0, A1) are availablefor
address selection. The sensor powersup with default thresh-
oldsof 2˚C THYST, 10˚C TLOW, 64˚C THIGH, and 80˚C
T_CRIT.
The LM77’s 3.0Vto 5.5V supply voltage range, Serial Bus
interface, 9-bit+ sign output, and full-scale rangeof over
128˚C makeit idealfora wide rangeof applications. These
include thermal management and protection applicationsin
personal computers, electronic test equipment, office elec-
tronics, automotive, and HVAC applications.
Features
Window comparison simplifies designof ACPI
compatible temperature monitoring and control. Serial Bus interface Separate open-drain outputsfor Interrupt and Critical
Temperature shutdown Shutdown modeto minimize power consumption Upto4 LM77s canbe connectedtoa single bus 9-bit+ sign output; full-scale readingof over 128˚C SOP and MSOP 8-lead packages
Key Specifications
Supply Voltage 3.0Vto 5.5V Supply Current operating 250μA (typ)
500μA (max)
shutdown 5μA (typ) Temperature
Accuracy
−10˚Cto 65˚C ±1.5˚C(max)
−25˚Cto 100˚C ±2˚C(max)
−55˚Cto 125˚C ±3˚C(max)
Applications
System Thermal Management Personal Computers Office Electronics Electronic Test Equipment Automotive HVAC
July 2001
LM77
9-Bit
Sign
Digital
emperature
Sensor
and
Thermal
indow
Comparator
with
wo-W
Interface
ic,good price


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