LM56 Texas instruments

LM56

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LM56

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Описание

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.

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

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