S-5843A

S-5843A Series www.sii-ic.com © Seiko Instruments Inc., 2009-2015 TEMPERATURE SWITCH IC (THERMOSTAT IC) Rev.2.2_00 The S-5843A 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-5843A Series restores the output voltage when the temperature drops to the level of release temperature. The S-5843A Series operates at the lower power supply voltage of 1.65 V and its current consumption is 4.5 μA typ. due to CMOS configuration. A temperature sensor with the negative temperature coefficient, a reference voltage generation circuit, a comparator and a delay circuit are integrated on one chip, and enclosed into the packages SOT-23-5 and SNT-6A.  Features Detection temperature: TDET = +40°C to +120°C, +1°C step, detection accuracy: ±2.5°C Low voltage operation: VDD = 1.65 V min. Low current consumption: IDD = 4.5 μA typ. (Ta = +25°C) Hysteresis temperature: selectable in 2°C, 4°C, 10°C or 20°C Selectable output logic in active "H" or "L" Selectable output form in CMOS or Nch open drain Prevent functions for false detection operation and false release operation Operation temperature range: Lead-free, Sn 100%, halogen-free*1 Ta = −40°C to +125°C *1. Refer to " Product Name Structure" for details.  Applications Fan control Air conditioning system Mobile phone Game console Various electronic devices ...