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S-5843A

Seiko Instruments
Part Number S-5843A
Manufacturer Seiko Instruments
Description TEMPERATURE SWITCH IC
Published Feb 7, 2010
Detailed Description S-5843A Series www.sii-ic.com © Seiko Instruments Inc., 2009-2015 TEMPERATURE SWITCH IC (THERMOSTAT IC) Rev.2.2_00 Th...
Datasheet PDF File S-5843A PDF File

S-5843A
S-5843A

Overview
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  Packages • SOT-23-5 • SNT-6A Seiko Instruments Inc.
1 TEMPERATURE SWITCH IC (THERMOSTAT IC) S-5843A Series  Block Diagrams 1.
CMOS output product VDD Temperature sensor + − Delay circuit Logic circuit (selectable) Reference voltage generation circuit VSS 2.
Nch open drain output product VDD Figure 1 RT Temperature sensor + − Delay circuit Logic circuit (selectable) Reference voltage generation circuit VSS Figure 2 RT 2 Seiko Instruments Inc.
Rev.
2.
2_00 DET DET Rev.
2.
2_00 ...


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