SNIU033 May 2019 TMP390
The TMP390 is an ultra-low power, dual-trip, dual-output, resistor-programmable temperature switch. This device enables thermal protection and thermal event monitoring over a wide temperature range. The TMP390 offers independent overtemperature (hot) and undertemperature (cold) detection in the temperature range from –55°C to +130°C with ±2.5°C trip accuracy. The Texas Instruments TMP390EVM (Evaluation Module) is easy to use and can evaluate the performance of the TMP390 right out of the box. The EVM has pre-populated resistors corresponding to a hot and cold trip point with 5°C hysteresis, and LED indicators at the outputs of the device. The trip test function is available through the use of onboard push buttons to test the output of both channels. The sensor is also located on a perforated portion of the PCB that can be separated from the main board for prototyping. The TMP390EVM does not require any calibration or software programming, as the trip points are programmed through two resistors. This document provides detailed information about the device operation and evaluation board features.