SM6611 series
NIPPON PRECISION CIRCUITS INC.
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
APPLICATIONS
I
Motherboard overheating protection
PINOUT
(Top view)
lim
1
2
3
6
5
4
T2
VSS
T3
Output switch
temperature
45°C
55
°
C
Output configuration
65
°
C
75
°
C
Open-drain active-
LOW output
85
°
C
95
°
C
ina
I
I
2.4 to 12.0V operating supply voltage
−20
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
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
Battery-pack temperature protection
PACKAGE DIMENSIONS
(Unit: mm)
VDD
T1
OUT
2.8 ± 0.2
+ 0.2
1.8
−
0.1
0.95
0.95
1.1 ± 0.1
0.8 ± 0.1
0.1
+ 0.1
0.40
−
0.05
0.12
M
pre
ORDERING INFORMATION
SM6611×AH series
Device
SM6611AAH
SM6611BAH
SM6611CAH
SM6611DAH
SM6611EAH
SM6611FAH
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
NIPPON PRECISION CIRCUITS—1
0 to 0.1
0.2 min.
ry
2.9 ± 0.2
1.9 ± 0.2
+ 0.1
0.125
−
0.05
SM6611 series
BLOCK DIAGRAM
VDD
TEST1
TEST2
TEST3
Output inverting
temperature detect
Comparator
Reference
temperature sensor
VSS
PIN DESCRIPTION
Number
1
2
Name
VDD
T1
I/O
–
3
OUT
4
5
6
T3
pre
l
VSS
T2
–
Ground
–
im
Supply voltage
–
O
–
ina
Hysteresis control
Description
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 100k
Ω
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.
Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
NIPPON PRECISION CIRCUITS—2
ry
Output
buffer
OUT
SM6611 series
SPECIFICATIONS
Absolute Maximum Ratings
V
SS
= 0V
Parameter
Supply voltage range
Power dissipation
Storage temperature range
Symbol
V
DD
P
D
Rating
−0.3
to 15
2.5
Unit
V
Recommended Operating Conditions
V
SS
= 0V
Parameter
Supply voltage range
Operating temperature range
DC Characteristics
V
DD
= 2.4 to 12V, V
SS
= 0V, Ta =
−20
to 100°C unless otherwise noted
Parameter
Supply voltage
Current consumption
Symbol
V
DD
I
DD
Condition
ina
ry
T
STG
−40
to 125
Symbol
V
DD
Rating
2.4 to 12
T
OPR
−20
to 100
Rating
typ
–
min
2.4
–
–
–
V
DD
−
1.0
–
−1
−3
–
max
12
30
–
–
–
–
–
–
10
100
0.3
0.4
–
12
+1
+3
–
mW
°C
Unit
V
°C
Unit
V
lim
V
OL
I
SINK
= 1mA, V
DD
> 2.4V
I
SINK
= 3mA, V
DD
> 4V
V
OH
V
OMAX
I
LEAK
∆T
TH
45 to 95°C
T
HYST
µA
V
V
V
V
µA
°C
°C
LOW-level output voltage
HIGH-level output voltage
CMOS output (SM6611×BH),
I
SOURCE
= 0.5mA, V
DD
> 2.4V
Open-drain output (SM6611×AH)
V
DD
= 2.4V, V
OUT
= 12V, (SM6611×AH)
Open-drain output maximum voltage
Open-drain output leakage current
Output switch temperature accuracy
Hysteresis temperature
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NIPPON PRECISION CIRCUITS—3
SM6611 series
NIPPON PRECISION CIRCUITS INC. reserves the right to make changes to the products described in this data sheet in order to
improve the design or performance and to supply the best possible products. Nippon Precision Circuits Inc. assumes no responsibility for
the use of any circuits shown in this data sheet, conveys no license under any patent or other rights, and makes no claim that the circuits
are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Nippon Precision
Circuits Inc. makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.
The products described in this data sheet are not intended to use for the apparatus which influence human lives due to the failure or
malfunction of the products. Customers are requested to comply with applicable laws and regulations in effect now and hereinafter,
including compliance with export controls on the distribution or dissemination of the products. Customers shall not export, directly or
indirectly, any products without first obtaining required licenses and approvals from appropriate government agencies.
NIPPON PRECISION CIRCUITS INC.
4-3, Fukuzumi 2-chome
Koto-ku, Tokyo 135-8430, Japan
Telephone: +81-3-3642-6661
Facsimile: +81-3-3642-6698
http://www.npc.co.jp/
Email: sales
@
npc.co.jp
NP0022AE 2001.02
NIPPON PRECISION CIRCUITS—4
pre
l
NIPPON PRECISION CIRCUITS INC.
im
ina
ry
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