S-5842A Series
www.sii-ic.com DUAL TRIP TEMPERATURE SWITCH IC
(THERMOSTAT IC)
© Seiko Instruments Inc., 2008-2013 Rev.2.2_00
Seiko Instruments Inc. 1
The S-5842A Series is a dual trip temperature switch IC (thermostat IC) which detects two points of temperature.
The S-5842A Series operates at the power supply voltage of 2.5 V and the lower current consum ption of 10 μA typ.
A temperature sensor with the negative temperature coefficient, a reference voltage generation circuit, a comparator and a
delay circuit are integrated o n one chip, and enclosed into the packages SOT-23-6 and SNT- 6A.
Features
• Detection temperature: Detection temperature = −10°C to +110°C, +1°C step
• Accuracy of detection temperatur e: ±2.5°C (Only for either detect ion temperature)
• Low voltage operation: VDD = 2.5 V min. (Detection temperature = +20°C to +110°C)
V
DD = 2.7 V min. (Detection temperature = 0°C to +110°C)
V
DD = 2.8 V min. (Detection temperature = −10°C to +110°C)
• Low current consumption: IDD = 10 μA typ. (Ta = +25°C)
• Selectable output form: CMOS output, Nch open-drain output
• Selectable output type: Separate, Integrate
• Selectable output logic: "H", "L"
• 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
• Mobile phone
• Game console
• Various electronics devices
Packages
• SOT-23-6
• SNT-6A
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
2
Block Diagrams
1. CMOS output product (Outpu t type: Separate)
+
−
+
−
VDD
DETH
DETL
RTLRTH
VSS
Reference voltage
generation circuit
Temperature
sensor
Delay circuit Logic circuit
(selectable)
Delay circuit Logic circuit
(selectable)
Figure 1
2. Nch open-drain output product (Output type: Separate)
+
−
+
−
VDD
DETH
DETL
RTLRTH
VSS
Reference voltage
generation circuit
Temperature
sensor
Delay circuit Logic circuit
(selectable)
Delay circuit Logic circuit
(selectable)
Figure 2
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 3
3. C M OS o ut p u t produc t (O u tp u t ty pe : I n te g r at e )
+
−
+
−
VDD
DETH
DETL
RTLRTH
VSS
Reference voltage
generation circuit
Temperature
sensor
Delay circuit Logic circuit
(selectable)
Delay circuit Logic circuit
(selectable)
Figure 3
4. Nch op en - d r a i n o u t pu t product ( O u t p ut typ e : I n t eg r a t e )
+
−
+
−
VDD
DETH
DETL
RTLRTH
VSS
Reference voltage
generation circuit
Temperature
sensor
Delay circuit Logic circuit
(selectable)
Delay circuit Logic circuit
(selectable)
Figure 4
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
4
Product Name Structure
Users are able to select the output form and type, option for detection temperature’s spec and package for the S-5842A
Series.
1. Product name
1. 1 SOT-23-6
S - 5842A x xxx - M6T1 x
Option*2
Output form and output type*3
A: CMOS output Separate type
B: Nch open-drain output Separate type
C: CMOS output Integrate type
D: Nch open-drain output Integrate type
Product name (abbreviation) and packing specifications*1
M6T1: SOT-23-6
,
Ta
p
e
Environmental code
U: Lead-free (Sn 100%), halogen-free
S: Lead-free, halogen-free
1. 2 SNT-6A
S - 5842A x xxx - I6T1 x
Option*2
Output form and output type*3
A: CMOS output Separate type
B: Nch open-drain output Separate type
C: CMOS output Integrate type
D: Nch open-drain output Integrate type
Product name (abbreviation) and packing specifications*1
I6T1: SNT-6A
,
Ta
p
e
Environmental code
U: Lead-free (Sn 100%), halogen-free
G: Lead-free (for details, please contact our sales office)
*1. Refer to the tape drawing.
*2. Refer to " Selection of Product Option". Settings are available in alphabetical order as AAA to ZZZ.
*3. Refer to " Selection of Product Option".
2. Packages
Table 1 Package Drawing Codes
Package Name Dimension Tape Reel Land
SOT-23-6 MP006-A-P-SD MP006-A-C-SD MP006-A-R-SD −
SNT-6A PG006-A-P-SD PG006-A-C-SD PG006-A-R-SD PG006-A-L-SD
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 5
3. Product name list
3. 1 SOT-23-6
Table 2
Option for Detection Temperature’s Spec
DETH Pin (for Higher Temperature) DETL Pin (for Lower Temperature)
Product Name Output Form
and T y pe
Detection
Temperature
(T
DH
)
Accuracy of
Detection
Temperature
*1
Hysteresis
Temperature
(T
HYSH
)
Output
Logic
Detection
Temperature
(T
DL
)
Accuracy of
Detection
Temperature
*1
Hysteresis
Temperature
(T
HYSL
)
Output
Logic
S-5842AAAAF-M6T1y CMOS,
Separate +95°C − −5°C "L" +55°C ±2.5°C −5°C "L"
S-5842AAAAG-M6T1y CMOS,
Separate +60°C − −5°C "H" 0°C ±2.5°C +5°C "L"
S-5842AAAAL-M6T1U CMOS,
Separate +45°C ±2.5°C −2°C "H" 0°C − +2°C "H"
S-5842AAAAN-M6T1y CMOS,
Separate +50°C − −5°C "L" +40°C ±2.5°C −5°C "L"
S-5842ACAAM-M6T1y CMOS,
Integrate +45°C − −2°C "L" 0°C ±2.5°C −2°C "L"
*1 Either of two detection temperatures (T DH, TDL), an accuracy of ±2.5°C is set only for the one that user specifi es a higher
accuracy than the other (TDH, TDL).
Remark 1. Please contact our sales office for products other than those specified above. Refer to " Selection of Product
Option" for details.
2. y: S or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
6
3. 2 SNT-6A
Table 3
Option for Detection Temperature’s Spec
DETH Pin (for Higher Temperature) DETL Pin (for Lower Temperature)
Product Name Output Form
and T y pe
Detection
Temperature
(T
DH
)
Accuracy of
Detection
Temperature
*1
Hysteresis
Temperature
(T
HYSH
)
Output
Logic
Detection
Temperature
(T
DL
)
Accuracy of
Detection
Temperature
*1
Hysteresis
Temperature
(T
HYSL
)
Output
Logic
S-5842AAAAL-I6T1x CMOS,
Separate +45°C ±2.5°C −2°C "H" 0°C − +2°C "H"
S-5842AAAAT-I6T1x CMOS,
Separate +45°C − −2°C "H" 0°C ±2.5°C +2°C "L"
S-5842ABAAA-I6T1x Nch open-drain,
Separate +62°C − +2°C "H" −3°C ±2.5°C −2°C "L"
S-5842ABAAC-I6T1x Nch open-drain,
Separate +60°C − −2°C "H" 0°C ±2.5°C +2°C "L"
S-5842ABAAJ-I6T1x Nch open-drain,
Separate +40°C − −2°C "H" +5°C ±2.5°C +2°C "L"
S-5842ABAAP-I6T1x Nch open-drain,
Separate +70°C − −5°C "L" +50°C ±2.5°C −5°C "H"
S-5842ABAAV-I6T1U Nch open-drain,
Separate +65°C − −5°C "L" +50°C ±2.5°C −5°C "L"
S-5842ABAAW-I6T1U Nch open-drain,
Separate +62°C − −2°C "H" +2°C ±2.5°C −2°C "H"
S-5842ABAAX-I6T1U Nch open-drain,
Separate +55°C − −5°C "H" −10°C ±2.5°C +5°C "L"
S-5842ACAAS-I6T1x CMOS,
Integrate +45°C − −2°C "L" 0°C ±2.5°C +2°C "L"
S-5842ADAAH-I6T1x Nch open-drain,
Integrate +70°C ±2.5°C −5°C "L" +5°C − −5°C "H"
S-5842ADAAK-I6T1x Nch open-drain,
Integrate +60°C ±2.5°C −5°C "L" +5°C − −5°C "H"
S-5842ADAAQ-I6T1x Nch open-drain,
Integrate +60°C − −2°C "H" 0°C ±2.5°C +2°C "L"
*1 Either of t wo detection temperatures (TDH, TDL), an accurac y of ±2.5°C is set only for the one that user specifies a higher
accuracy than the other (TDH, TDL).
Remark 1. Please contact our sales office for products other than those specified a bove. Refer to " Selection of Product
Option" for details.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-fre e products.
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 7
Pin Configurations
1. SOT-23-6
Table 4
Pin No. Symbol Description
1 VDD Power supply pin
2 DETL Output pin for lower temperature detection
3 RTL*1 TEST pin
4 RTH*2 TEST pin
5 VSS GND pin
6 DETH Output pin for higher temperature detection
132
546
Top view
Figure 5
*1. Set the RTL pin open in use.
*2. Set the RTH pin open in use.
.
2. SNT-6A
Table 5
Pin No. Symbol Description
1 DETH Output pin for higher temperature detection
2 VSS GND pin
3 RTH*1 TEST pin
4 RTL*2 TEST pin
5 DETL Output pin for lower temperature detection
6 VDD Power supply pin
5
4
6
2
3
1
Top view
Figure 6
*1. Set the RTH pin open in use.
*2. Set the RTL pin open in use.
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
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Absolute Maximum Ratings
Table 6
(Ta = +25°C un less otherwise specified)
Item Symbol Absolute Maximum Rating Unit
Power supply voltage (VSS = 0 V) VDD V
SS + 6.5 V
Pin voltage VRTH, VRTL V
SS − 0.3 to VDD + 0.3 V
CMOS output product VSS − 0.3 to VDD + 0.3 V
Output voltage Nch open-drain output product VDETH, VDETL VSS − 0.3 to VSS + 6.5 V
IOHH, IOHL 13 mA
Output pin current IOLH, IOLL 13 mA
SOT-23-6 650*1 mW
Power
dissipation SNT-6A PD 400*1 mW
Operation ambient temperature Topr −40 to +125 °C
Storage temperature Tstg −65 to +150 °C
*1. When mounted on board
[Mounted board]
(1) Board size : 114.3 mm × 76.2 mm × t1.6 mm
(2) Board name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 9
DC Electrical Characteristics
1. CMOS output product
Table 7
(Ta = +25°C un less otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Detection temperature
= +20°C to +110°C 2.5 − 5.5 V 1
Detection temperature
= 0°C to +110°C 2.7 − 5.5 V 1
Power supply voltage VDD
Detection temperature
= −10°C to +110°C 2.8 − 5.5 V 1
Detection temperature*1 TDH or TDL − T
DET − 2.5 TDET T
DET + 2.5 °C 1
Difference of detection
temperature*2 ΔTD V
DD = 3.5 V − ΔTDET − °C 1
Hysteresis temperature
of DETH pin*3 THYSH V
DD = 3.5 V − −5, −2,
+2, +5 − °C 1
Hysteresis temperature
of DETL pin*3 THYSL V
DD = 3.5 V − −5, −2,
+2, +5 − °C 1
Output current "H"
of DETH pin IOHH V
DD = 3.5 V, VDETH = 3.0 V 0.5 3.2 − mA 2
Output current "H"
of DETL pin IOHL V
DD = 3.5 V, VDETL = 3.0 V 0.5 3.2 − mA 2
Output current "L"
of DETH pin IOLH V
DD = 3.5 V, VDETH = 0.5 V 0.5 3.0 − mA 2
Output current "L"
of DETL pin IOLL V
DD = 3.5 V, VDETL = 0.5 V 0.5 3.0 − mA 2
Current consumption
during operation IDD V
DD = 3.5 V − 10 16 μA 1
*1. T
DET: set value for detection temperature, TDH: actual detection temperature for higher temperature,
TDL: actual detection temperature for lower temperature
Either of two detection temperatures (TDH, TDL), an accuracy of ±2.5°C is set only for the one that user specifies a higher
accuracy than the other (TDH, TDL).
*2. ΔTDET: set value for detection temperature for higher temperature − set value for detection temperature for lower
temperature
ΔTD: actual difference of detection temperature
Set two points of detection temperature so that the difference of detection temperature (ΔTDET) is in 0°C to 65°C. Users are
able to set ΔTDET in 0°C, 5°C, 10°C … 60°C, 65°C.
*3. Users are able to select the hysteresis temperature in −5°C, −2°C, +2°C, or +5°C.
[Fahrenheit ⇔ Celsius Conversion equation]
°C = (°F − 32) × 5 / 9
°F = 32 + °C × 9 / 5
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
10
2. Nch open-drain output product
Table 8 (Ta = +25°C un less otherwise specified)
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Detection temperature
= +20°C to +110°C 2.5 − 5.5 V 1
Detection temperature
= 0°C to +110°C 2.7 − 5.5 V 1
Power supply voltage VDD
Detection temperature
= −10°C to +110°C 2.8 − 5.5 V 1
Detection temperature*1 TDH or TDL − T
DET − 2.5 TDET TDET + 2.5 °C 1
Difference of detection
temperature*2 ΔTD VDD = 3.5 V − ΔTDET − °C 1
Hysteresis temperature
of DETH pin*3 THYSH V
DD = 3.5 V − −5, −2,
+2, +5 − °C 1
Hysteresis temperature
of DETL pin*3 THYSL V
DD = 3.5 V − −5, −2,
+2, +5 − °C 1
Leakage current
of DETH pin ILEAKH V
DD = 3.5 V, VDETH = 5.5 V − − 100 nA 2
Leakage current
of DETL pin ILEAKL V
DD = 3.5 V, VDETL = 5.5 V − − 100 nA 2
Output current "L"
of DETH pin IOLH V
DD = 3.5 V, VDETH = 0.5 V 0.5 3.0 − mA 2
Output current "L"
of DETL pin IOLL V
DD = 3.5 V, VDETL = 0.5 V 0.5 3.0 − mA 2
Current consumption
during operation IDD V
DD = 3.5 V − 10 16
μA 1
*1. T
DET: set value for detection temperature, TDH: actual detection temperature for higher temperature,
TDL: actual detection temperature for lower temperature
Either of two detection temperatures (TDH, TDL), an accuracy of ±2.5°C is set only for the one that user specifies a higher
accuracy than the other (TDH, TDL).
*2. ΔTDET: set value for detection temperature for higher temperature − set value for detection temperature for lower
temperature
ΔTD: actual difference of detection temperature
Set two points of detection temperature so that the difference of detection temperature (ΔTDET) is in 0°C to 65°C. Users are
able to set ΔTDET in 0°C, 5°C, 10°C … 60°C, 65°C.
*3. Users are able to select the hysteresis temperature in −5°C, −2°C, +2°C, or +5°C.
[Fahrenheit ⇔ Celsius Conversion equation]
°C = (°F − 32) × 5 / 9
°F = 32 + °C × 9 / 5
AC Electrical Characteristics
Table 9
Item Symbol Condition Min. Typ. Max. Unit
Test
Circuit
Noise suppression time tdelay VDD = 3.5 V,
Ta = detection temperature − 550 − μs −
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 11
Test Circuits
VSS
VDD
DETL
RTH
S-5842A Series
Open
R
*1
100 kΩ
DETH
R
*1
100 kΩ
C
IN
C
L
C
L
V
A
V
V
Open
RTL
*1. Resistor (R) is unnecessary for the CMOS output product.
Figure 7 Test Circuit 1
VSS
VDD
DETL
RTH
S-58 42A Se ri es
Open
DETH
C
IN
C
L
C
L
V
A
V
V
Open
RTL
A
A
Figure 8 Test Circuit 2
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
12
Selection of Product Option
1. Description of product option
The S-5842A Series is a temperature s witch IC (thermostat IC) which detects two points of temperature, and outputs a
signal to the exterior.
Users are able to select the combination of output type, form and logic, two detection temperatures (TDH, TDL), and
hysteresis temperature (THYSH, THYSL).
Output form: Set the output logic for each DETH pin and DETL pin.
• CMOS output
• Nch open-drain output
Output type: for DETH pin and DETL pin, users are able to select two types of output as follows.
• Separate type: The DETH pin’s output inverts during detection of higher temperature
The DETL pin’s output inverts during detection of lower temperature
• Integrate type: The DETH pin’s output inverts during detection of higher temperature
The DETL pin’s output inverts during detection of higher and lo wer temperature
Detection temperature (TDH, TDL):
T
DH is the detection temperature for higher temperature, TDL is the detection temperature for lower
temperature. Of two points of detection temperatures (TDH, TDL), select the detection temperature
that is to be set the higher accuracy (±2.5°C accuracy).*1
• The detection temperature for higher temperature is selectable in +20°C to +110°C, in 1°C step.
• The detection temperature for lower temperature is selectable in −10°C to +110°C, in 1°C step.
• Set two points of detection temperature so that the difference of detection temperature (ΔTDET) is in 0°C
to 65°C. Users are able to set ΔTDET in 0°C, 5°C, 10°C … 60°C, 65°C.
The minimum operation voltage varies according to the detection temperature for lower temperature.
• Detection temperature = +20°C to +110°C: VDD = 2.5 V min.
• Detection temperature = 0°C to +110°C: VDD = 2.7 V min.
• Detection temperature = −10°C to +110°C: VDD = 2.8 V min.
*1 Either of two detection temperatures (TDH, TDL), an accuracy of ±2.5°C is set only for the one that user specifies a
higher accuracy than the other (T DH, TDL).
Hysteresis temperature (T HYSH, THYSL):
T
HYSH is the hysteresis temperature for detection temperature for higher temperature, THYSL is the
hysteresis temperature for detection temperature for lower temperature. These are selectable in −5°C,
−2°C, +2°C, or +5°C.
• −5°C: Output recovers when temperature has dropped to 5°C from the detection temperature.
• −2°C: Output recovers when temperature has dropp ed to 2°C from the detection temperature.
• +2°C: Output recovers when temperature has risen to 2°C from the detection temperature.
• +5°C: Output recovers when temperature has risen to 5°C from the detection temper ature.
Output logic: Set the output logic for each DETH, DETL pin in Ta > detection temperature (TDH, TDL) or release
temperature (TDH + THYSH, TDL + THYSL).
(1) Hysteresis temperature: −5°C, −2°C
• The output logic is "H" in Ta > detection temperature
• The output logic is "L" in Ta > detection temperature
(2) Hysteresis temperature: +2°C, +5°C
• The output logic is "H" in Ta > release temperature
• The output logic is "L" in Ta > release temperature
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 13
2. Example of product spec
Example of Product Spec Operation
Output form: CMOS output
Output type: Separate type
[DETH pin]
Detection voltage: TDH
Hysteresis temperature:
THYSH (< 0)
Output logic: "H"
[DETL pin]
Detection voltage: TDL
Hysteresis temperature:
THYSL (< 0)
Output logic: "H"
DETH pin output
Temp
TDH
THYSH
DETL pin output
Temp
TDL
THYSL
L
H
L
H
Figure 9 Operation for CMOS Output and Separate Type
Output form: CMOS output
Output type: Integrate type
[DETH pin]
Detection temperature: TDH
Hysteresis temperature:
THYSH (< 0)
Output logic: "H"
[DETL pin]
Detection temperature: TDL
Hysteresis temperature:
THYSL (< 0)
Output logic: "H"
DETH pin output
Temp
TDH
THYSH
DETL pin output
Temp
TDL
THYSL
TDH
THYSH
L
H
L
H
Figure 10 Operation for CMOS Output and Integrate Type
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
14
Operation
1. Separate type
The followings are the operation with its specs when the S-5842A Series is Separate type. The timing chart is shown in
Figure 11.
• Output form and type: CMOS output, Separate type
• Option : DETH pin Detection temperature TDH = +95°C
Hysteresis temperature THYSH = −5°C
Output logic "H"
DETL pin Detectio n temperature TDL = +55°C
Hysteresis temperature THYSL = −5°C
Output logic "H"
H
(1) (2) (3) (5)
(4)
L
H
L
Detection temperature (TDH = +95°C)
Difference of detection temperature
(ΔTD = +40°C)
Detection temperature (TDL = +55°C)
Ambient temperature (Ta)
DETH pin output
(Output logic "H")
DETL pin output
(Output logic "H")
Hysteresis temperature
(THYSH = −5°C)
Hysteresis temperature
(THYSL = −5°C)
Figure 11 Timing Chart for CMOS Output and Separate Type
Detecting the temperature is started after power-on.
In case;
(1) Ambient temperature (Ta) < detection temperature (TDL = +55°C)
The DETH pin output a nd the DETL pin output keep "L".
(2) The ambient temperature (Ta) rises;
detection temperature (TDL = +55°C) < ambient temperature (Ta) < detection temperature (TDH = +95°C)
The DETH pin output keeps "L", the DETL pin output gets "H".
(3) Furthermore, the ambient temperature (Ta) rises;
ambient temperature (Ta) > detection temperature (TDH = +95°C)
The DETL pin output keeps "H", the DETH pin output gets "H".
(4) After that, the ambient temperature (Ta) falls;
release temperature (T DH + THYSH = +90°C) > ambient temper ature (Ta) > release temperature (TDL + THYSL = +50°C)
The DETH pin output gets "L", the DETL pin output keeps "H".
(5) Furthermore the ambient temperature (Ta) falls;
ambient temperature (Ta) < release temperature (TDL + THYSL = +50°C)
The DETH pin output keeps "L", the DETL pin output gets "L".
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 15
2. Integrate type
The followings are the operation with its specs when the S-5842A Series is Separate type. The timing chart is shown in
Figure 12.
• Output form and type: CMOS output, Integrate type
• Option : DETH pin Detection temperature TDH = +95°C
Hysteresis temperature THYSH = −5°C
Output logic "H"
DETL pin Detection temperature TDL = +55°C
Hysteresis temperature THYSL = −5°C
Output logic "H"
Hysteresis temperature
(THYSH = −5°C)
H
(1) (2) (3) (5)
(4)
L
H
L
Hysteresis temperature
(THYSL = −5°C)
Ambient temperature (Ta)
DETH pin output
(Output logic "H")
DETL pin output
(Output logic "H")
Detection temperature (TDH = +95°C)
Difference of detection temperature
(ΔTD = +40°C)
Detection temperature (TDL = +55°C)
Figure 12 Timing Chart for CMOS Output and Integrate Type
Detecting the temperature is started after power-on.
In case;
(1) Ambient temperature (Ta) < detection temperature (TDL = +55°C)
The DETH pin output a nd the DETL pin output keep "L".
(2) The ambient temperature (Ta) rises;
detection
temperature (TDL = +55°C) < ambient temperature (Ta) < detection temperature (TDH = +95°C)
The DETH pin output keeps "L", the DETL pin output gets "H".
(3) Furthermore, the ambient temperature (Ta) rises;
ambient temperature (Ta) > detection temperature (TDH = +95°C)
The DETH pin output gets "H", the DETL pin output gets "L".
(4) After that, the ambient temperature (Ta) falls;
release temperature (T DH + THYSH = +90°C) > ambient temper ature (Ta) > release temperature (TDL + THYSL = +50°C)
The DETH pin output gets "L", the DETL pin output gets "H".
(5) Furthermore the ambient temperature (Ta) falls;
ambient temperature (Ta) < release temperature (TDL + THYSL = +50°C)
The DETH pin output keeps "L", the DETL pin output gets "L".
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
16
3. Delay circuit
The S-5842A Series sets the noise suppression time (tdelay) via the delay circuit. By this, the S-5842A Series prevents
false detection operations of DETH pin and DET L pin output.
The followings are the operation of the DETH pin output when the output logic is "H".
3. 1 The temperature is the d etectio n temperature or less
The output from a comparator is "H", and the DETH pin output is "L". Due to noise or others, the output from a
comparator is inverted to "L" once; however, the DETH pin output keeps "L" if this status is tdelay or shorter.
3. 2 The temperature exceeds the detection temperature
The output from a comparator gets "L". And the DETH pin output gets "H" after the period has passed tdelay
or longer.
Standard Circuit
VSS
VDD
DETL
RTH
RTL
S-5842A Series
Open
R
*1
100 kΩ
DETH
R
*1
100 kΩ
C
IN
C
L
C
L
Open
*1. Resistor (R) is unnecessary for CMOS output product.
Figure 13
Caution The above connection diagram will not guarantee successful operation. Perform thorough evaluation
using actual application to set the constant.
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 17
Precautions
• Either of two detection temperatures (TDH, TDL), an accuracy of ±2.5°C is set only for the one that user specifies a
higher accuracy than the other (TDH, TDL).
• Set a capacitor (CIN) of 0.1 μF or more between the VDD pin and VSS pin for stabilization.
• To prevent error due to noise during power-on, set a capacitor (CL) of approx. 0.1 μF for the DETH pin and the DETL
pin.
• The S-5842A Series may oscillate b y connecting a capacitor to the RTH pin and the RTL pin. Set the RTH pin and
the RTL pin open in use.
• The DETH / DETL pin output a signal that of (Ta > detection temperature) by short-circuit the RTH / RTL pin to VSS.
• Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in electrostatic
protection circuit.
• SII claims no responsibility for any disputes arising out of or in connection with any infringement by products,
including this IC, of patents owned by a third party.
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
18
Characteristics (Typical Data)
1. Current consumption during operation vs. Power supply voltage characteristics
1.0 2.0
I
DD
[μA]
12
11
10
9
8
6
7
0.0 3.0 4.0 5.0 6.0
V
DD
[V]
−40°C
+25°C
+125°C
+85°C
2.
Output current "H" of DETH / DETL pin vs. Power supply voltage characteristics (CMOS output product
only)
VDETH = VDD − 0.5 V, VDETL = VDD − 0.5 V
1.0 2.0
I
OHH
, I
OHL
[mA]
7
00.0 3.0 4.0 5.0 6.0
1
3
5
6
2
4
V
DD
[V]
−40°C
+125°C
+25°C
+85°C
3. Output current "L" of DETH / DETL pin vs. Power supply voltage characteristics
VDETH = 0.5 V, VDETL = 0.5 V
1.0 2.0
I
OLH
, I
OLL
[mA]
10
8
6
4
0
2
0.0 3.0 4.0 5.0 6.0
V
DD
[V]
−40°C
+125°C
+25°C
+85°C
4. Noise suppression time vs. Power supply voltage characteristics
1.0 2.0
t
delay
[μs]
1000
00.0 3.0 4.0 5.0 6.0
250
750
500
V
DD
[V]
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 19
5. Response against heat (Output voltage vs. Time)
5. 1 When SNT-6A is put into the air of +100°C from the air of +25°C at t = 0 s
VDD = 3.5 V, CL = 0 μF, Detection temperature = +62°C, Output logic "H"
−10
2
1
0
−1
4
3
01020
30
V
DETH
[V]
t [s]
5. 2 When SNT-6A is put into the liquid of +100°C from the air of +25°C at t = 0 s
VDD = 3.5 V, CL = 0 μF, Detection temperature = +62°C, Output logic "H"
−10
2
1
0
−1
4
3
01020
30
V
DETH
[V]
t [s]
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
20
6. Response against startup
6. 1 Pow er-on at Ta = +25°C
TDH = +110°C, TDL = +45°C, Output logic "H", CL = 0 μF
V
DD
(= 3.5 V)
DETL
DETH
2 V / div.
GND
2 V / div.
GND
2 V / div.
GND
t (200 μs / div.)
6. 2 Pow er-on at Ta = +80°C
TDH = +110°C, TDL = +45°C, Output logic "H", CL = 0 μF
V
DD
(= 3.5 V)
DETL
DETH
2 V / div.
GND
2 V / div.
GND
2 V / div.
GND
t (200 μs / div.)
6. 3 Pow er-on at Ta = +120°C
TDH = +110°C, TDL = +45°C, Output logic "H", CL = 0 μF
V
DD
(= 3.5 V)
DETL
DETH
2 V / div.
GND
2 V / div.
GND
2 V / div.
GND
t (200 μs / div.)
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 21
7. Accuracy of detection temperatur e
High accuracy detection voltage: TDH
TDH = +110°C, TDL = +45°C
Measured data on one wafer picked up
7. 1 Accuracy of detection temp erature at TDH = +110°C (Higher accuracy)
70
0−2.5 2.5−2.0 −1.0 0.0 1.0 2.0
10
30
40
20
50
60
Ratio [%]
Deviation in detection temperature [°C]
7. 2 Accuracy of detection temp erature at TDL = +45°C
70
0−2.5 2.5−2.0 −1.0 0.0 1.0 2.0
10
30
40
20
50
60
Ratio [%]
Deviation in detection temperature [°C]
DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series Rev.2.2_00
Seiko Instruments In c.
22
Marking Specifications
1. SOT-23-6
(1) to (3): Product code (Refer to Product name vs. Product code)
(4): Lot number
123
465
Top view
(1) (2) (3) (4)
Product name vs. Product code
Product Code
Product Name (1) (2) (3)
S-5842AAAAF-M6T1y U I F
S-5842AAAAG-M6T1y U I G
S-5842AAAAL-M6T1U U I L
S-5842AAAAN-M6T1y U I N
S-5842ACAAM-M6T1y U J M
Remark 1. Please contact our sales office for the products other than those specified above.
2. y: S or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
DUAL TRIP TEMPERATURE SWITCH IC IC (THERMOSTAT IC)
Rev.2.2_00 S-5842A Series
Seiko Instruments In c. 23
2. SNT-6A
(1) to (3): Product code (Refer to Product name vs. Product code)
(4) to (6): Lot number
1
3
6
4
25
Top view
(1) (2) (3)
(4) (5) (6)
Product name vs. Product code
Product Code
Product Name (1) (2) (3)
S-5842AAAAL-I6T1x U I L
S-5842AAAAT-I6T1x U I T
S-5842ABAAA-I6T1x U H A
S-5842ABAAC-I6T1x U H C
S-5842ABAAJ-I6T1x U H J
S-5842ABAAP-I6T1x U H P
S-5842ABAAV-I6T1U U H V
S-5842ABAAW-I6T1U U H W
S-5842ABAAX-I6T1U U H X
S-5842ACAAS-I6T1x U J S
S-5842ADAAH-I6T1x U G H
S-5842ADAAK-I6T1x U G K
S-5842ADAAQ-I6T1x U G Q
Remark 1. Please contact our sales office for the products other than those specified above.
2. x: G or U
3. Please select products of environmental code = U for Sn 100%, halogen-free products.
2.9±0.2
0.15
1.9±0.2
123
4
65
0.35±0.15
0.95
+0.1
-0.05
0.95
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
No. MP006-A-P-SD-2.0
MP006-A-P-SD-2.0
SOT236-A-PKG Dimensions
No.
TITLE
SCALE
UNIT mm
123
45
6
ø1.5 +0.1
-0 2.0±0.05
ø1.0 +0.2
-0 4.0±0.1
1.4±0.2
0.25±0.1
3.2±0.2
Seiko Instruments Inc.
No. MP006-A-C-SD-3.1
MP006-A-C-SD-3.1
SOT236-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
No.
TITLE
SCALE
UNIT mm
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY 3,000
Seiko Instruments Inc.
Enlarged drawing in the central part
No. MP006-A-R-SD-2.1
MP006-A-R-SD-2.1
SOT236-A-Reel
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-6A-A-PKG Dimensions
PG006-A-P-SD-2.0
No. PG006-A-P-SD-2.0
0.2±0.05
0.48±0.02
0.08 +0.05
-0.02
0.5
1.57±0.03
123
45
6
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5
1.85±0.05 0.65±0.05
0.25±0.05
5°
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
PG006-A-C-SD-1.0
SNT-6A-A-Carrier Tape
No. PG006-A-C-SD-1.0
+0.1
-0
1
2
4
3
56
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY.
No. PG006-A-R-SD-1.0
PG006-A-R-SD-1.0
Enlarged drawing in the central part
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
SNT-6A-A-Reel
5,000
No.
TITLE
SCALE
UNIT mm
SNT-6A-A-Land Recommendation
Seiko Instruments Inc.
PG006-A-L-SD-4.0
No. PG006-A-L-SD-4.0
0.3
0.2
0.52
1.36
0.52
1
2
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1. (0.25 mm min. / 0.30 mm typ.)
2. (1.30 mm ~ 1.40 mm)
0.03 mm
SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package ( 1.30 mm ~ 1.40 mm ).
1.
2.
※1. 䇋⊼ᛣ⛞Ⲭᓣⱘᆑᑺ(0.25 mm min. / 0.30 mm typ.)DŽ
※2. 䇋࣓ᇕ㺙Ё䯈ᠽሩ⛞Ⲭᓣ (1.30 mm ~ 1.40 mm)DŽ
⊼ᛣ1. 䇋࣓㛖ൟᇕ㺙ⱘϟ䴶ࠋϱ㔥ǃ⛞䫵DŽ
2. ᇕ㺙ϟǃᏗ㒓Ϟⱘ䰏⛞㝰ᑺ (Ң⛞Ⲭᓣ㸼䴶䍋) 䇋ࠊ0.03 mmҹϟDŽ
3. 㝰ⱘᓔষሎᇌᓔষԡ㕂䇋Ϣ⛞Ⲭᓣᇍ唤DŽ
4. 䆺㒚ݙᆍ䇋খ䯙 "SNTᇕ㺙ⱘᑨ⫼ᣛ"DŽ
www.sii-ic.com
• The information described herein is subject to change without notice.
• Seiko Instruments Inc. is not responsible for any problems caused by circuits or diagrams described herein
whose related industrial properties, patents, or other rights belong to third parties. The application circuit
examples explain typical applications of the products, and do not guarantee the success of any specific
mass-production design.
• When the products described herein are regulated products subject to the Wassenaar Arrangement or other
agreements, they may not be exported without authorization from the approp riate governmental authority.
• Use of the information described herein for other purposes and/or reproduction or copying without the
express permissi on of Seiko Instruments Inc. is strictly prohibited.
• The products described herein cannot be used as part of any device or equipment affecting the human
body, such as exercise equipment, medical equipment, security systems, gas equipment, vehicle equipment,
in-vehicle equipment, aviation equipment, aerospace equipment, and nuclear-related equipment, without prior
written permission of Seiko Instrum ents Inc.
• The products described herein are not designed to be radiation-proof.
• Although Seiko Instruments Inc. exerts the greatest possible effort to ensure high quality and reliability, the
failure or malfunction of semiconductor products may occur. The user of these products should therefore
give thorough consideration to safety design, including redundancy, fire-prevention measures, and
malfunction prevention, to prevent any accidents, fires, or comm unity damage that may ensue.
