SM6611 series
Miniature High-Precision Temperature Switch IC
OVERVIEW
The SM6611 series are temperature switch ICs that change state (invert) when the chip temperature exceeds a
preset temperature. The switches are designed with temperature hysteresis to prevent unstable output when the
temperature is in the vicinity of the preset temperature. There are 6 output switching temperatures in the series,
available in 2 output configurations, making the SM6611 series devices ideal for a wide range of applications.
FEATURES
I
I
I
I
I
2.4 to 10.0V operating supply voltage
−40
to 100°C operating temperature range
±3°C temperature accuracy
45 to 95°C output switch temperatures in 10°C
steps
10°C temperature hysteresis
I
I
I
30µA (typ) low current consumption
Output configuration
• SM6611×AH open-drain active-LOW output
• SM6611×BH CMOS active-HIGH output
6-pin SOT23-6W package
APPLICATIONS
I
Motherboard overheating protection
I
Battery-pack temperature protection
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
2.9 ± 0.2
1.9 ± 0.2
+ 0.1
0.125
−
0.05
VDD
T1
OUT
1
2
3
6
5
4
T2
2.8 ± 0.2
+ 0.2
1.8
−
0.1
VSS
T3
0.95
0.95
1.1 ± 0.1
0.8 ± 0.1
0.1
+ 0.1
0.40
−
0.05
0.12
M
ORDERING INFORMATION
SM6611×AH series
Device
SM6611AAH
*1
SM6611BAH
*1
SM6611CAH
*1
SM6611DAH
*1
SM6611EAH
SM6611FAH
*1
Output switch
temperature
45°C
55°C
65°C
75°C
85°C
95°C
Open-drain
active-LOW output
Output configuration
SM6611×BH series
Device
SM6611ABH
SM6611BBH
SM6611CBH
SM6611DBH
SM6611EBH
SM6611FBH
Output switch
temperature
45°C
55°C
65°C
75°C
85°C
95°C
CMOS active-HIGH
output
Output configuration
*1. These versions are produced after receiving a purchase order.
Please ask our Sales & Marketing section for further details.
SEIKO NPC CORPORATION —1
0 to 0.1
0.2 min.
SM6611 series
BLOCK DIAGRAM
VDD
TEST1
TEST2
TEST3
Output inverting
temperature detect
Comparator
Reference
temperature sensor
Hysteresis control
Output
buffer
OUT
VSS
PIN DESCRIPTION
Number
1
2
Name
VDD
T1
I/O
–
–
Supply voltage
Test pin 1. This pin is used for test purposes by NPC. It has a built-in pull-up resistor. Leave
open for normal operation.
Output.
SM6611×AH: Open-drain output. A pull-up resistor of 100kΩ should be connected to this
pin. Goes LOW when the switch preset temperature is exceeded.
SM6611×BH: CMOS output. Goes LOW to HIGH when the switch preset temperature is
exceeded.
Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
Ground
Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
Description
3
OUT
O
4
5
6
T3
VSS
T2
–
–
–
SEIKO NPC CORPORATION —2
SM6611 series
SPECIFICATIONS
Absolute Maximum Ratings
V
SS
= 0V
Parameter
Supply voltage range
Power dissipation
Storage temperature range
Symbol
V
DD
P
D
T
STG
Rating
−0.3
to 15
10
−55
to 125
Unit
V
mW
°C
Recommended Operating Conditions
V
SS
= 0V
Parameter
Supply voltage range
Operating temperature range
Symbol
V
DD
T
OPR
Rating
2.4 to 10
−40
to 100
Unit
V
°C
DC Characteristics
V
DD
= 2.4 to 10V, V
SS
= 0V, Ta =
−40
to 100°C unless otherwise noted.
Rating
Parameter
Supply voltage
Current consumption
LOW-level output voltage
HIGH-level output voltage
Open-drain output maximum voltage
Open-drain output leakage current
Output switch temperature accuracy
Hysteresis temperature
Symbol
V
DD
I
DD
V
OL
V
OH
V
OMAX
I
LEAK
∆T
TH
T
HYST
I
SINK
= 1mA, V
DD
> 2.4V
I
SINK
= 3mA, V
DD
> 4V
CMOS output (SM6611×BH),
I
SOURCE
= 0.5mA, V
DD
> 2.4V
Open-drain output (SM6611×AH)
V
DD
= 2.4V, V
OUT
= 10V, (SM6611×AH)
45 to 95°C
Condition
min
2.4
–
–
–
V
DD
−
1.0
–
−1
−3
–
typ
–
30
–
–
–
–
–
–
10
max
10
100
0.3
0.4
–
10
+1
+3
–
V
µA
V
V
V
V
µA
°C
°C
Unit
SEIKO NPC CORPORATION —3
SM6611 series
Please pay your attention to the following points at time of using the products shown in this document.
The products shown in this document (hereinafter “Products”) are not intended to be used for the apparatus that exerts harmful influence on
human lives due to the defects, failure or malfunction of the Products. Customers are requested to obtain prior written agreement for such
use from SEIKO NPC CORPORATION (hereinafter “NPC”). Customers shall be solely responsible for, and indemnify and hold NPC free and
harmless from, any and all claims, damages, losses, expenses or lawsuits, due to such use without such agreement. NPC reserves the right
to change the specifications of the Products in order to improve the characteristic or reliability thereof. NPC makes no claim or warranty that
the contents described in this document dose not infringe any intellectual property right or other similar right owned by third parties.
Therefore, NPC shall not be responsible for such problems, even if the use is in accordance with the descriptions provided in this document.
Any descriptions including applications, circuits, and the parameters of the Products in this document are for reference to use the Products,
and shall not be guaranteed free from defect, inapplicability to the design for the mass-production products without further testing or
modification. Customers are requested not to export or re-export, directly or indirectly, the Products to any country or any entity not in
compliance with or in violation of the national export administration laws, treaties, orders and regulations. Customers are requested
appropriately take steps to obtain required permissions or approvals from appropriate government agencies.
SEIKO NPC CORPORATION
1-9-9, Hatchobori, Chuo-ku,
Tokyo 104-0032, Japan
Telephone: +81-3-5541-6501
Facsimile: +81-3-5541-6510
http://www.npc.co.jp/
Email: sales@npc.co.jp
NC0022DE 2007.10
SEIKO NPC CORPORATION —4
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