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Seiko Instruments Electronic Components Datasheet


S-5841

TEMPERATURE SWITCH IC


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S-5841 pdf
S-5841 Series
www.sii-ic.com
© Seiko Instruments Inc., 2007-2015
TEMPERATURE SWITCH IC (THERMOSTAT IC)
Rev.2.2_00
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
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 +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.
Applications
Fan control
Air conditioning system
Various electronic devices
Packages
SOT-23-5
SNT-6A
Seiko Instruments Inc.
1



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S-5841 pdf
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5841 Series
Block Diagrams
1. CMOS output product
VDD
Temperature
sensor
+
Delay circuit
Logic circuit
(selectable)
Reference voltage
generation circuit
VSS
HYS1 HYS2*1
*1. The HYS2 pin is not equipped for SOT-23-5.
Figure 1
2. Nch open drain output product
VDD
RT
Temperature
sensor
+
Delay circuit
Logic circuit
(selectable)
Reference voltage
generation circuit
VSS
HYS1 HYS2*1
*1. The HYS2 pin is not equipped for SOT-23-5.
Figure 2
RT
2 Seiko Instruments Inc.
Rev.2.2_00
DET
DET



Part Number S-5841
Description TEMPERATURE SWITCH IC
Maker Seiko Instruments - Seiko Instruments
Total Page 26 Pages
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