LM26CIM5X-VPA ,SOT-23, ±3°C Accurate, Factory Preset Thermostat±LM26 SOT-23, 3˚C Accurate, Factory Preset ThermostatMarch 2005LM26±SOT-23, 3˚C Accurate, Factory P ..
LM26CIM5X-VPA/NOPB ,Temperature Switch with Fixed Trip Points 5-SOT-23 -55 to 125Maximum Ratings may cause permanent damage to the device. These are stress ratingsonly, which do no ..
LM26CIM5X-XHA ,SOT-23, ±3°C Accurate, Factory Preset Thermostat±LM26 SOT-23, 3˚C Accurate, Factory Preset ThermostatMarch 2005LM26±SOT-23, 3˚C Accurate, Factory P ..
LM26CIM5X-XPA ,SOT-23, ±3°C Accurate, Factory Preset ThermostatGeneral Descriptionn Fan ControlThe LM26 is a precision, single digital-output, low-powern Industri ..
LM26CIM5X-XPA/NOPB ,Temperature Switch with Fixed Trip Points 5-SOT-23 -55 to 125Block Diagram and Connection DiagramTOSHYST OST - TOS HYST HYSTREF Temp. of +LeadsGNDTEMP -OSSENSO ..
LM26CIM5X-XPA/NOPB ,Temperature Switch with Fixed Trip Points 5-SOT-23 -55 to 1256 Pin Configuration and FunctionsDBV Package5-Pin SOT-23(Top View)Pin FunctionsPINTYPE DESCRIPTIONN ..
LM567CM ,Tone DecoderLM567/LM567C Tone DecoderFebruary 2003LM567/LM567CTone Decodern High rejection of out of band signa ..
LM567CMX ,Tone DecoderFeaturesn Wide band FSK demodulationn 20 to 1 frequency range with an external resistorn Ultrasonic ..
LM567CMX ,Tone DecoderFeaturesn Wide band FSK demodulationn 20 to 1 frequency range with an external resistorn Ultrasonic ..
LM567CN ,Tone DecoderGeneral Descriptionn Immunity to false signalsTheLM567andLM567Caregeneralpurposetonedecodersn Highl ..
LM56BIM ,Dual Output Low Power ThermostatLM56 Dual Output Low Power ThermostatMay 2004LM56Dual Output Low Power Thermostat
LM56BIMM ,Dual Output Low Power ThermostatFeaturesn Digital outputs support TTL logic levelsThe LM56 is a precision low power thermostat. Two ..
LM26CIM5-NPA-LM26CIM5-PHA-LM26CIM5-RPA-LM26CIM5-SHA-LM26CIM5-SPA-LM26CIM5-TPA-LM26CIM5-VHA-LM26CIM5-VPA-LM26CIM5-XHA-LM26CIM5X-NPA-LM26CIM5-XPA-LM26CIM5X-PHA-LM26CIM5X-RPA-LM26CIM5X-SHA-LM26CIM5X-SPA-LM26CIM5X-TPA-LM26CIM5X-VHA-LM26CIM5X-VPA-LM26CIM5X-XHA-LM26CIM
SOT-23, ±3°C Accurate, Factory Preset Thermostat
LM26
SOT-23, ±3˚C Accurate, Factory Preset Thermostat
General DescriptionThe LM26isa precision, single digital-output, low-power
thermostat comprisedofan internal reference, DAC, tem-
perature sensor and comparator. Utilizing factory program-
ming,it canbe manufactured with differenttrip pointsas well different digital output functionality. The trip point (TOS)
canbe presetatthe factoryto any temperatureinthe range −55˚Cto +110˚Cin 1˚C increments. The LM26 has one
digital output (OS/OS/US/US), one digital input (HYST) and
one analog output (VTEMP). The digital output stage canbe
presetas either open-drainor push-pull.In addition,it canbe
factory programmedtobe active HIGHor LOW. The digital
output canbe factory programmedto indicatean over tem-
perature shutdown event (OSor OS)oran under tempera-
ture shutdown event (USor US). When presetasan over-
temperature shutdown (OS)it willgo LOWto indicate that
thedie temperatureis overthe internally preset TOS andgo
HIGH whenthe temperature goes below (TOS–THYST). Simi-
larly, when preprogrammedasan undertemperature shut-
down (US)itwillgo HIGHto indicate thatthe temperatureis
below TUS andgo LOW when the temperatureis above
(TUS+THYST). The typical hysteresis, THYST, canbe setto
2˚Cor 10˚C andis controlledbythe stateofthe HYST pin.A
VTEMP analog output providesa voltage thatis proportional temperature and hasa −10.82mV/˚C output slope.
Available parts are detailedin the ordering information. For
other part options, contacta National Semiconductor Dis-
tributoror Sales Representativefor informationon minimum
order qualification. The LM26is currently availableina
5-lead SOT-23 package.
Applications Microprocessor Thermal Management Appliances Portable Battery Powered Systems Fan Control Industrial Process Control HVAC Systems Remote Temperature Sensing Electronic System Protection
Features Internal comparator withpin programmable 2˚Cor 10˚C
hysteresis No external components required Open Drainor push-pull digital output; supports CMOS
logic levels Internal temperature sensor with VTEMP outputpin VTEMP output allows after-assembly system testing Internal voltage reference and DACfor trip-point setting Currently availablein 5-pin SOT-23 plastic package Excellent power supply noise rejection
Key Specifications Power Supply Voltage 2.7Vto 5.5V Power Supply Current 40µA(max)
20µA(typ) Hysteresis Temperature 2˚Cor 10˚C(typ)
Temperature Trip Point Accuracy
Temperature Range LM26CIM−55˚Cto +110˚C ±3˚C (max)
+120˚C ±4˚C (max)
LM26CIM5-TPA Simplified Block Diagram and Connection DiagramThe LM26CIM5-TPA hasa fixed trip pointof 85˚C.
For other trip point and output function availability,
please see ordering informationor contact National Semiconductor.
March 2005
LM26
SOT
-23,
3˚C
Accurate,
Factory
Preset
Thermostat
