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PDF S-5843A Data sheet ( Hoja de datos )
| Número de pieza | S-5843A | |
| Descripción | TEMPERATURE SWITCH IC | |
| Fabricantes | Seiko Instruments | |
| Logotipo |  |
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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
1 page  
Rev.2.2_00
Pin Configurations
1. SOT-23-5
Top view
54
123
Figure 3
2. SNT-6A
Top view
16
25
34
Figure 4
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5843A Series
Table 4
Pin No.
1
Symbol
NC*1
Description
No connection
2 VSS
3 RT*2
GND pin
Test pin
4 VDD
Power supply pin
5 DET
Output pin
*1. The NC pin is electrically open.
The NC pin can be connected to VDD pin or VSS pin.
*2. Set the RT pin open in use.
Table 5
Pin No.
1
Symbol
RT*1
Test pin
Description
2 VSS
3 NC*2
GND pin
No connection
4 DET
5 NC*2
Output pin
No connection
6 VDD
Power supply pin
*1. Set the RT pin open in use.
*2. The NC pin is electrically open.
The NC pin can be connected to VDD pin or VSS pin.
Seiko Instruments Inc.
5
5 Page 
Rev.2.2_00
TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5843A Series
Characteristics (Typical Data)
1. Current consumption vs. Power supply voltage characteristics
6
5 +125°C
4
3
−40°C
+80°C +25°C
2
1
0
0
1.0 2.0 3.0 4.0 5.0 6.0
VDD [V]
2. DET pin current "H" vs. Power supply voltage characteristics (CMOS output product only)
25
20
15
10
5
0
0
VDET = VDD − 0.8 V
−40°C
+25°C
+80°C
+125°C
1.0 2.0 3.0 4.0 5.0 6.0
VDD [V]
3. DET pin current "L" vs. Power supply voltage characteristics
7
6
5
4
3
2
1
0
0
VDET = 0.4 V
+25°C
−40°C
+80°C
+125°C
1.0 2.0 3.0 4.0 5.0 6.0
VDD [V]
4. Noise suppression time vs. Power supply voltage characteristics
1000
750
500
250
0
0
1.0 2.0 3.0 4.0 5.0 6.0
VDD [V]
Seiko Instruments Inc.
11
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet S-5843A.PDF ] | |
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