S-5844A Series TEMPERATURE SWITCH IC (THERMOSTAT IC) www.ablic.com ABLIC Inc., 2011-2019 Rev.2.7 00 The S-5844A Series is a temperature switch IC (thermostat IC) which detects the temperature with a temperature accuracy of 2.5C. 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-4A, and the super-small package HSNT-4 (1010). Features Detection temperature: T = +50C to +100C, +5C step, detection accuracy: 2.5C DET Low voltage operation: V = 1.65 V min. DD Low current consumption: I = 0.18 A typ. (Ta = +25C) DD Hysteresis temperature: selectable in 5C, 10C, 15C or 20C Selectable output logic in active or active Selectable output form in CMOS or Nch open-drain Operation temperature range: Ta = 40C to +125C Lead-free (Sn 100%), halogen-free Applications Fan control Air conditioning system Mobile phone Game console Various electronic devices Packages SOT-23-5 SNT-4A HSNT-4 (1010) 1 TEMPERATURE SWITCH IC (THERMOSTAT IC) S-5844A Series Rev.2.7 00 Block Diagrams 1. CMOS output product VDD Temperature + Logic circuit sensor DET (selectable) Reference voltage generation circuit TEST VSS Figure 1 2. Nch open-drain output product VDD Temperature + Logic circuit sensor DET (selectable) Reference voltage generation circuit TEST VSS Figure 2 2