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LM66CIM-RLSKB
Dual Output Internally Preset Thermostat [Life-time buy]
LM66
Dual Output Internally Preset Thermostat
General DescriptionThe LM66isa precision low power thermostat. Two stable
temperature trip points (VT1 and VT2) are generatedby
dividing down the LM66 1.250V bandgap voltage reference
usinga resistors divider network. The LM66 has two digital
outputs. OUT1 goes LOW whenthe temperature exceedsT1
and goes HIGH when the the temperature goes below
(T1–THYST). Similarly, OUT2 goes LOW whenthe tempera-
ture exceedsT2 and goes HIGH whenthe temperature goes
below (T2–THYST). THYSTisan internally set 5˚C typical
hysteresis.
The LM66is currently availableinan 8-lead small outline
package.
Applications Microprocessor Thermal Management Appliances Portable Battery Powered 3.0Vor5V Systems Fan Control Industrial Process Control HVAC Systems Remote Temperature Sensing Electronic System Protection
Features Digital outputs support TTL logic levels Internal temperature sensor2 internal comparators with hysteresis Internal voltage reference Currently availablein 8-pin SO plastic package
Key Specifications Power Supply Voltage 2.7Vto 10V Power Supply Current 250μA (max) VREF 1.250V ±1.4%
(max) Hysteresis Temperature 5˚C Internal Temperature Sensor
Output Voltage
(+6.20 mV/˚CxT)
+400mV Temperature Trip Point
Accuracy
±3˚C (max) T1set point +73˚C T2set point +82˚C
Simplified Block Diagram and
Connection Diagram
Ordering Information
TABLE1.Order Number LM66CIM-
RLSKB
LM66CIMX-
RLSKB Tackage
Number
M08A M08A
Transport Media Bulk Rail 2500 Units Tape Reel
Typical ApplicationDS100854-1
DS100854-2 DS100854-3
April 2000
LM66
Dual
Output
Internally
Preset
Thermostat
