© Seiko Instruments Inc., 2007-2015
TEMPERATURE SWITCH IC (THERMOSTAT IC)
The S-5841 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-5841 Series restores the output
voltage when the temperature drops to the level of release temperature.
The S-5841 Series operates at the lower power supply voltage of 2.2 V and its current consumption is 10 μA typ. due to
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.
• Detection temperature:
TDET = +40°C to +100°C, +1°C step, detection accuracy: ±2.5°C
• Low voltage operation:
VDD = 2.2 V min.
(Detection temperature = +55°C to +100°C, Ta = −40°C to +100°C)
• Low current consumption:
IDD = 10 μA typ. (Ta = +25°C)
• Hysteresis temperature can be switched in 0°C, 2°C, 4°C and 10°C.
• Selectable output logic in active "H" or "L"
• Selectable output form in CMOS or Nch open drain
• Operation temperature range:
Ta = −40°C to +125°C
• Lead-free, Sn 100%, halogen-free*1
*1. Refer to " Product Name Structure" for details.
• Fan control
• Air conditioning system
• Various electronic devices
Seiko Instruments Inc.