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LM56

LM56 Description

Dual Output Low Power Thermostat

LM56 Categories

Thermostatic Switches

LM56 Manufacturer

National Semiconductor

LM56 Datasheet (PDF)

LM56 Datasheet

LM56 Price & Availability


Check LM56 Price & Availability at Canics

LM56 Features

  • Digital outputs support TTL logic levels
  • Internal temperature sensor
  • 2 internal comparators with hysteresis
  • Internal voltage reference
  • Available in 8-pin SO and Mini-SO8 plastic packages

LM56 Description

    The LM56 is a precision low power thermostat. Two stable temperature trip points (VT1 and VT2) are generated by dividing down the LM56 1.250V bandgap voltage reference using 3 external resistors. The LM56 has two digital outputs. OUT1 goes LOW when the temperature exceeds T1 and goes HIGH when the the temperature goes below (T1-THYST). Similarly, OUT2 goes LOW when the temperature exceeds T2 and goes HIGH when the temperature goes below (T2-THYST). THYST is an internally set 5°C typical hysteresis.

    The LM56 is available in an 8-lead Mini-SO8 surface mount package and an 8-lead small outline package.

    LM56 Parameters

    Temperature Min (deg C)-40
    Temperature Max (deg C)125
    Supply Min (Volt)2.70
    Supply Max (Volt)10
    Quiescent Current (mA).23
    Accuracy (+/-) (deg C)2, 3
    Sensor Gain6.2 mV/Deg C
    VtempOutput Impedance (Ohm)1500
    Comparators ()2
    Preset SetpointsNo
    Reference Output (Volt)1.25
    Select parameters and click to see components with these parameters.

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    Keywords
    LM56 Data Sheet LM56 Spec LM56 Application Notes LM56 Distributor
    LM56 Circuit LM56 Reference LM56 PDF LM56 RoHS