NPC SM6611ABH, SM6611BAH, SM6611BBH, SM6611CAH, SM6611CBH Datasheet
...
preliminary
−
±3 °
10 °
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
■
2.4 to 12.0V operating supply voltage
■
20 to 100 ° C operating temperature range
■
C temperature accuracy
■
45 to 95 ° C output switch temperatures in 10 ° C
steps
■
C temperature hysteresis
■
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
■
Motherboard overheating protection
PINOUT
(Top view)
■
Battery-pack temperature protection
PACKAGE DIMENSIONS
(Unit: mm)
2.9 ± 0.2
1.9 ± 0.2
6
VDD
T1
OUT
1
2
3
T2
+ 0.2
+ 0.1
1.8 − 0.1
0.8 ± 0.1
0.12
5
VSS
4
T3
0.95 0.95
0.40 − 0.05
ORDERING INFORMATION
SM6611 × AH series SM6611 × BH series
Device
SM6611AAH 45 ° C
SM6611BAH 55 ° C
SM6611CAH 65 ° C
SM6611DAH 75 ° C
SM6611EAH 85 ° C
SM6611FAH 95 ° C
Output switch
temperature
Output configuration
Open-drain active-
LOW output
Device
SM6611ABH 45 ° C
SM6611BBH 55 ° C
SM6611CBH 65 ° C
SM6611DBH 75 ° C
SM6611EBH 85 ° C
SM6611FBH 95 ° C
Output switch
temperature
0.1
2.8 ± 0.2
1.1 ± 0.1
M
0 to 0.1
Output configuration
+ 0.1
0.125 − 0.05
0.2 min.
CMOS active-HIGH
output
NIPPON PRECISION CIRCUITS—1
preliminary
BLOCK DIAGRAM
SM6611 series
VDD
Output inverting
temperature detect
Reference
temperature sensor
VSS
PIN DESCRIPTION
Number Name I/O Description
1 VDD – Supply voltage
2T1–
3 OUT O
4 T3 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
5 VSS – Ground
6 T2 – Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
TEST1
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.
TEST2 TEST3
Comparator
Hysteresis control
Output
buffer
OUT
NIPPON PRECISION CIRCUITS—2
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