The LM57 is a precision, dual-output, temperature switch with integrated analog temperature sensor. The trip temperature (TTRIP) is programmable by using two external 1% resistors. Using extremely small packaged resistors (0.5 mm x 1 mm), the LM57 can be programmed to any of 256 trip temperatures while consuming very little board space. The VTEMP output delivers an analog output voltage which is proportional with a negative temperature coefficient (NTC) to the measured temperature.
Trip Temperature Set by External Resistors
External Resistor Tolerance Contributes Zero Error
Push-Pull and Open-Drain Temperature Switch Outputs
Wide Operating Temperature and Trip-Temperature Range of −50°C to 150°C
Very Linear Analog VTEMP Temperature Sensor Output
Analog and Digital Outputs are Short-Circuit Protected