Dual Output Resistor-Programmable Temperature Switch - LM56

LM56 (ACTIVE)

Dual Output Resistor-Programmable Temperature Switch

 

Recommended alternative parts

  • LM57  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   Resistor programmable dual trip point with analog ouput

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 VSSOP surface mount package and an 8-lead SOIC.

Features

  • 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

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Parametrics Compare all products in Temperature  Switches  / Thermostat

 
Operating Temperature Range (C)
Accuracy Over Temp Range (Max) (C)
Sensor Gain (mV/Deg C)
SetPoint Value (deg C)
SetPoint Type
Output Type
Supply Voltage (Min) (V)
Supply Voltage (Max) (V)
Supply Current (Typ) (uA)
# Comparators
Special Features
Rating
Package Group
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
Interface
LM56 LM26LV LM57 TMP300 TMP708 TMP709
-40 to 125
-40 to 85   
0 to 150    -50 to 150    -40 to 125    -40 to 125    -40 to 125   
3    2.3    1.5    2    3    3   
6.2    -5.1 to -12.8    -5.2 to -12.9    10       
-40 to 125    Range (0 to 150)
50, 60, 65, 70
75, 80, 85, 90
95, 100, 105, 110
115, 120, 125, 130
135, 140, 145, 150   
-40 to 150    -40 to 125    0 to 125    0 to 125   
Resistor Programmable    Factory Programmed    Resistor Programmable    Resistor Programmable    Resistor Programmable    Resistor Programmable   
Open Drain    Open Drain
Push Pull   
Open Drain
Push Pull   
Open Drain    Open Drain    Open Drain   
2.7    1.6    2.4    1.8    2.7    2.7   
10    5.5    5.5    18    5.5    5.5   
230    8    24    110    40    40   
2    1    1    1    1    1   
Built-in Hysteresis
Hysteresis (5°C)
Temperature Sensor and Switch   
Built-in Hysteresis
Hysteresis (5°C)
Temperature Sensor and Switch
Trip Test   
Built-in Hysteresis
Hysteresis (5°C or 10°C)
Temperature Sensor and Switch
Trip Test   
Hysteresis (5°C or 10°C)
Pin-Selectable Hysteresis
Temperature Sensor and Switch   
Hysteresis (10°C or 30°C)
Pin-Selectable Hysteresis   
Hysteresis (2°C or 10°C)
Pin-Selectable Hysteresis   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
DIESALE
SOIC
VSSOP   
WSON    TSSOP
WSON   
SC70
SOT-23   
SOT-23    SOT-23   
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
8SOIC: 29 mm2: 6 x 4.9(SOIC)   
See datasheet (WSON)    See datasheet (WSON)    6SC70: 4 mm2: 2.1 x 2(SC70)
6SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)    5SOT-23: 8 mm2: 2.8 x 2.9(SOT-23)   
0.59 | 1ku    0.43 | 1ku    0.65 | 1ku    0.75 | 1ku    0.30 | 1ku    0.30 | 1ku   
Analog Output
Switch   
Analog Output
Switch   
Analog Output
Switch   
Analog Output
Switch   
Switch    Switch