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LM66 Datasheet Dual Output Internally Preset Thermostat

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM66 Dual Output Internally Preset Thermostat April 2000 LM66 Dual Output Internally Preset.

General Description

The LM66 is a precision low power thermostat.

Two stable temperature trip points (VT1 and VT2) are generated by dividing down the LM66 1.250V bandgap voltage reference using a resistors divider network.

The LM66 has two digital outputs.

Key Features

  • n n n n n Digital outputs support TTL logic levels Internal temperature sensor 2 internal comparators with hysteresis Internal voltage reference Currently available in 8-pin SO plastic package Key Specifications n Power Supply Voltage n Power Supply Current n VREF n Hysteresis Temperature n Internal Temperature Sensor Output Voltage (+6.20 mV/˚C x T) +400 mV ± 3˚C (max) n Temperature Trip Point Accuracy n T1 set point +73˚C n T2 set point +82˚C 2.7V to 10V 250 µA (max) 1.250V ± 1.4% (max) 5˚C.

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