The TMP01ESZ is a low power Programmable Temperature Controller that generates a voltage output proportional to absolute temperature and a control signal from one of two outputs when the device is either above or below a specific temperature range. Both the high/low temperature trip points and hysteresis (overshoot) band are determined by user-selected external resistors. For high volume production, these resistors are available on board. The TMP01 consists of a band gap voltage reference combined with a pair of matched comparators. The reference provides both a constant 2.5V output and a voltage proportional to absolute temperature (VPTAT) which has a precise temperature coefficient of 5mV/K and is 1.49V (nominal) at 25°C. The comparators compare VPTAT with the externally set temperature trip points and generate an open-collector output signal when one of their respective thresholds has been exceeded.
