Product details

Setpoint type Resistor Programmable Setpoint value (°C) -40 to 125 Operating temperature range (°C) -40 to 125 Accuracy over temp range (max) (°C) 3 Sensor gain (mV/°C) 6.2 Output type Open drain Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 10 Supply current (typ) (µA) 230 Number of comparator channels 2 Features Built-in hysteresis, UL recognized Rating Catalog Interface type Analog output, Switch
Setpoint type Resistor Programmable Setpoint value (°C) -40 to 125 Operating temperature range (°C) -40 to 125 Accuracy over temp range (max) (°C) 3 Sensor gain (mV/°C) 6.2 Output type Open drain Supply voltage (min) (V) 2.7 Supply voltage (max) (V) 10 Supply current (typ) (µA) 230 Number of comparator channels 2 Features Built-in hysteresis, UL recognized Rating Catalog Interface type Analog output, Switch
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Digital Outputs Support TTL Logic Levels
  • Internal Temperature Sensor
  • 2 Internal Comparators with Hysteresis
  • Internal Voltage Reference
  • Available in 8-pin SOIC and VSSOP Packages
  • Digital Outputs Support TTL Logic Levels
  • Internal Temperature Sensor
  • 2 Internal Comparators with Hysteresis
  • Internal Voltage Reference
  • Available in 8-pin SOIC and VSSOP Packages

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 VSSOP surface mount package and an 8-lead SOIC.

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 VSSOP surface mount package and an 8-lead SOIC.

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Technical documentation

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Type Title Date
* Data sheet LM56 Dual Output Low Power Thermostat datasheet (Rev. G) 19 Feb 2013
Certificate UL Certificate of Compliance Vol1-Sec9 E232195 06 Aug 2018
More literature Die D/S LM56C MDC Dual Output Low Power Thermostat 27 Sep 2012

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SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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