View s5844a-series datasheet:

S-5844A Series TEMPERATURE SWITCH IC (THERMOSTAT IC) www.ablic.com www.ablicinc.com © ABLIC Inc., 2011-2014 Rev.2.6_02 The S-5844A Series is a temperature switch IC (thermostat IC) which detects the temperature with a temperature accuracy of 2.5C. The output inverts when temperature reaches the detection temperature. The S-5844A Series restores the output voltage when the temperature drops to the level of release temperature. The S-5844A Series operates at the lower power supply voltage of 1.65 V and its current consumption is 0.18 A typ. due to CMOS configuration. A temperature sensor with the negative temperature coefficient, a reference voltage generation circuit and a comparator are integrated on one chip, and enclosed into the packages SOT-23-5 and SNT-