S-8130AA Series
www.sii-ic.com TEMPERATURE SWITCH IC WITH LATCH
© Seiko Instruments Inc., 2001-2010 Rev.3.0_00
Seiko Instruments Inc. 1
The S-8130AA is a temperature switch with a latch function having a built-in semiconductor temperature sensor
with the accuracy of ±2.5°C. The output signal is inverted when the temperature is detected, and latched until a
reset signal input or a detection of the power voltage lowering.
Low voltage operation down to 2.2 V is possible and the current consumption is low, 15 μA (typ.), due to CMOS
configuration.
The S-8130AA consists of a temperature sensor having the temperature coefficient of −13 mV/°C, a reference
voltage source, a comparator, voltage detection circuit, and noise suppression circuit all of which are enclosed
in 8-Pin MSOP package.
Since the temperature range of this IC is −40 to +100 °C, it is possible to achieve the extensive application for
temperature control.
Features
• Detection temperature : +60 to +95°C, 5°C step
• Detection accuracy : ±2.5°C
• VSS grounded temperature voltage output
• Low voltage operation : VDD (min.)=2.2 V
• Low current consumption : 15 μA typ. (+25°C)
• A built-in circuit for preventing malfunction of temperature detection
• Output logic level is fixed by the latch after temperature detection
• Lead-free, halogen-free*1
*1. Refer to “ Product Name Structure” for details.
Applications
• Game console
• Electronic devices
Package
• 8-Pin MSOP
TEMPERATURE SWITCH IC WITH LATCH
S-8130AA Series Rev.3.0_00
Seiko Instruments Inc.
2
Block diagram
S-8130AAxFN-xxxT2z (Fixed detection temperature)
VDD
VSS
Temparature
Se nsor
D
CK
D-F/F
CD1
CD2
RESET
Ref erence
voltage source
Voltage detector
with d ela y circuit
DET
+
-
Vref
VOUT
Vref
R
Q
RT
Figure 1
TEMPERATURE SWITCH IC WITH LATCH
Rev.3.0_00 S-8130AA Series
Seiko Instruments Inc. 3
Product Name Structure
1. Product name
S - 8130 A A x F N - x x x T 2 x
IC direction in tape specifications
Abbreviated Code
Option code
Environmental code
S: Lead-free, halogen-free
G: Lead-free (for details, please contact our sales office)
Option list
• Detection temperature TDET is selectable in 5°C step in the range between 60 and 95°C.
• DET output is selectable active high or active low.
• Release voltage VRET is selectable in 0.1 V step in the range between 2.2 and 3.4 V.
• RESET pin is selectable “PuII-up” or “Nch Open Drain”.
2. Package
Drawing Code
Package Name Package Tape Reel
8-Pin MSOP FN008-A-P-SD FN008-A-C-SD FN008-A-R-SD
3. Product name list
Table 1
Product name TDET DET output VRET RESET
S-8130AAAFN-MAAT2z 80°C Active high 2.4 V Pull-up
S-8130AACFN-MAET2z 86°C Active high 2.9 V Pull-up
Remark 1. Please contact our sales department for options other than those specified above.
2. z: G or S
TEMPERATURE SWITCH IC WITH LATCH
S-8130AA Series Rev.3.0_00
Seiko Instruments Inc.
4
Pin configuration
Figure 2
Pin Description Table 2
Pin No. Pin Name Function Input/Output
1 VDD Positive power supply pin ⎯
2 DET Output pin for detection at the defined
temperature CMOS output : Output logic is
selectable
3 CD2 Capacitor connection pin for delay time
setting in voltage detection Input/Output
4 CD1 Capacitor connection pin for time setting
of malfunction prevention Input/Output
5 VSS Ground pin ⎯
6 RESET Input/Output pin for reset
Active low
Input : CMOS
Output : N channel open drain
(Pull-up resistance is optional)
7 RT Reference voltage input pin (short-
circuited to VOUT pin internally) Input
8 VOUT Output pin for reference voltage from the
internal comparator Output
8-Pin MSOP
Top view
1
2
3
4
8
7
6
5
VDD
DET
CD2
CD1
VOUT
RT
VSS
RESET
TEMPERATURE SWITCH IC WITH LATCH
Rev.3.0_00 S-8130AA Series
Seiko Instruments Inc. 5
Absolute maximum ratings Table 3 (Ta = 25 °C unless otherwise specified)
Parameter Symbol Ratings Unit
Supply voltage (VSS=0.0 V) VDD VSS+12 V
Pin voltage VOUT, VRT, VRESET ,
VDET, VCD1, VCD2 VSS−0.3 to VDD+0.3 V
300 (When not mounted on board) mW
Power dissipation PD 500*1 mW
Operating temperature Topr −40 to +100 °C
Storage temperature Tstg −55 to +125 °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 w hich the product could
suffer physical damage. These values must therefore not be exceeded under any
conditions.
Recommended values for external parts
Table 4
Parameters Symbol Value Unit
CD1 capacitance CD1 4.7 nF
CD2 capacitance CD2 4.7 nF
TEMPERATURE SWITCH IC WITH LATCH
S-8130AA Series Rev.3.0_00
Seiko Instruments Inc.
6
DC Electrical Characteristics Table 5 (Ta=25°C, VSS=0 V unless otherwise specified)
Parameters Symbol Conditions Min. Typ. Max. Unit
Supply voltage VDD ⎯ 2.2 ⎯ 10.0 V
Detection
temperature TD ⎯ T
DET−2.5 TDET TDET+2.5 °C
IDETH V
DET=2.2 V 2 4 ⎯ mA
Output current 1 IDETL
VDD=3 V
Applied to
DET pin VDET=0.4 V 0.5 1 ⎯ mA
VONH 0.8 × VDD ⎯ VDD V
Input voltage VONL Applied to RESET pin VSS ⎯ 0.2 × VDD V
Pull-up resistance ROL Applied to RESET pin
VIN=0 V, VDD=3.0 V 30 100 300
kΩ
Release voltage for
voltage detector VR ⎯ VRET ×
0.98 VRET VRET ×
1.02 V
Hysteresis width for
voltage detector VHYS ⎯ ⎯ VRET ×
0.05 ⎯ V
Output current for
voltage detector
IRSTL VDD=3.0 V, VRESET =0.5 V
Applied to RESET pin
0.5
1
⎯
mA
Temperature
coefficient for voltage
detector
Δ
Δ
V
Ta V
RET
RET
• Ta= −40 to 100°C ⎯ ±100 ⎯ ppm/
°C
Operating current IDD V
DD=3.3 V ⎯ 15 30 μA
AC Electrical Characteristics Table 6 (Ta=25°C unless otherwise specified)
Parameters Symbol Conditions Min. Typ. Max. Unit
Noise filtering time Tnoise C
D1=4.7 nF, VDD=3 V 10 30 50 ms
Delay time for
voltage detector Tdelay C
D2=4.7 nF, VDD=3 V 10 30 50 ms
Definition of the symbols used in the voltage detection circuit
A B
V
DD
Tdelay
V
SS
Release voltage (VRET)
Detection voltage
Minimum operating voltage
RESET pin voltage (VDD)
Hysteresis width
(VHYS)
V
SS
Figure 3
TEMPERATURE SWITCH IC WITH LATCH
Rev.3.0_00 S-8130AA Series
Seiko Instruments Inc. 7
Description of Operation
1. Basic operation
S-8130AA series is a temperature switch which detects the temperature and sends a signal to an external
device. The users can select a combination of the parameters such as detection temperature and release
voltage.
The following is the case that the DET output is active high.
When the power voltage is turned on, the DET pin voltage goes to low since the flip-flop circuit in the
detection circuit is cleared by the delayed voltage detection circuit. Temperature detection then starts and
the DET pin is held low as long as the temperature is lower than the detection temperature. The
temperature rises and when the temperature exceeds the detection temperature; longer than the time
defined by the capacitor connected to the CD1 pin, the DET pin goes to high. Once the over-temperature
is detected and the DET pin goes to high, the state is held by the flip-flop circuit. In order to release the
state the RESET pin voltage should be set to low by the external signal or the power voltage should be set
under the detection voltage of the built-in detector to reset the internal circuit.
Using the internal reference voltage and built-in temperature sensor, the accuracy of ±2.5°C in the
detection temperature is achieved.
Noise Protection circuit
The noise protection circuit prevents malfunction of the temperature switch caused by noise.
The noise protection circuit starts charging the capacitor connected to the CD1 pin when the output of the
internal comparator enters active state due to an external noise or a rapid change in the power voltage. In
the normal operation the flip-flop circuit is set when the capacitor is charged to a certain voltage. But in the
noise triggered operation the comparator output goes back to inactive state and the CD1 pin voltage is
held low since the charging of the capacitor is insufficient. As a result the DET pin is held low and
malfunction does not occur.
Noise suppression time, Tnoise, is determined by the time constant consisting of internal constant current
and the capacitance CD1, and calculated by the following equation.
Tnoise (ms)=Noise suppression time coefficient × CD1(nF)
Noise suppression time coefficient (25°C): Typ. 6.4
2. Voltage detection circuit with delay
The delay circuit in the voltage detector provides a delayed output signal to the RESET pin when the
power voltage VDD rises and exceeds the release voltage VR. On the other hand no delay occurs when the
power voltage VDD goes lower than the detection voltage, VR-VHYS.
The delay time, Tdelay, is determined by the time constant consisting of internal constant current and the
capacitance CD2, and calculated by the following equation.
Tdelay (ms)=Delay coefficient × CD2 (nF)
Delay coefficient (25°C): Min. 4.3, Typ. 6.4, Max. 8.5
• Layout the board wiring so that the current does not flow into or flow out of the CD2 pin to have correct
delay time since the impedance of the CD2 pin is high.
• Capacitance of the external capacitor CD2 has no limitation as long as its leak current is negligible
compared to the internal constant current. The difference occurs in delay time if the capacitor has leak
current. When the leak current is larger than the internal constant current, the voltage detection circuit
does not release reset.
TEMPERATURE SWITCH IC WITH LATCH
S-8130AA Series Rev.3.0_00
Seiko Instruments Inc.
8
Application circuit
Protection
circuit
VSS
CD1
VDD RT
DET
CD2
S-8130AA
RESET
Open
Open
VOUT
C P U
VSS
Output port
(Input po rt)
VDD
Figure 4
Caution The above connection diagram will not guarantee successful operation. Perform
thorough evaluation using actual application to set the constant.
Precautions
(1) Since the S-8130AA has a voltage detector inside, control for the RESET pin is not necessary to
activate the circuit as seen in Figure 4. In this case the RESET pin should be open.
(2) A capacitor of around 1 μF should be connected to the DET pin to prevent malfunction caused by a
noise due to the power on.
(3) Nothing should be connected to the VOUT pin and the RT pin. These pins should be left open.
(4) Do not apply an electrostatic discharge to this IC that exceeds the performance ratings of the built-in
electrostatic protection circuit.
TEMPERATURE SWITCH IC WITH LATCH
Rev.3.0_00 S-8130AA Series
Seiko Instruments Inc. 9
Typical Characteristics
1. Current consumption vs. power voltage
10.0
11.0
12.0
13.0
14.0
0 1 2 3 4 5 6 7 8 9 10
Ta = -40°C
100°C
25° C
IDD − VDD, VSS = 0 V
VDD (V)
IDD (μA)
2. DET pin ISOURCE vs. VDD characteristics
0
2
4
6
8
10
0 1 2 3 4 5 6 7 8 9 10
VDD (V)
ISOURCE (mA)
100°C
Ta = -40°C
25°C
ISOURCE − V DD, VOH = VDD − 0.8 V
3. DET pin ISINK vs. VDD characteristics
0
5
10
15
20
25
0 1 2 3 4 5 6 7 8 9 10
Ta = -40°C
100° C
25°C
ISINK − VDD, VOL = 0.4 V
VDD (V)
ISINK (mA)
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
2.95±0.2
85
0.2±0.1
0.65±0.1
0.13±0.1
14
MSOP8-A-PKG Dimensions
No. FN008-A-P-SD-1.1
FN008-A-P-SD-1.1
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
0.3±0.05
1.35±0.15
1.05±0.05
1.55±0.05
2.0±0.05
4.0±0.1
3.1±0.15
4.0±0.1
1
4
58
MSOP8-A-Carrier Tape
Feed direction
No. FN008-A-C-SD-1.1
FN008-A-C-SD-1.1
No.
TITLE
SCALE
UNIT mm
Seiko Instruments Inc.
16.5max.
13.0±0.3
QTY. 3,000
(60°)
(60°)
13±0.2
Enlarged drawing in the central part
MSOP8-A-Reel
No. FN008-A-R-SD-1.1
FN008-A-R-SD-1.1
www.sii-ic.com
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examples explain typical applications of the products, and do not guarantee the success of any specific
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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.
