NCT22, NCT24
Low Cost Single Trip Point
Temperature Sensor
The NCT22 and NCT24 are programmable solid state temperature
sensors designed to replace mechanical switches in sensing and
control applications. Both devices integrate the temperature sensor
with a voltage reference and all required detector circuitry. The desired
temperature set point is set by the user with a single external resistor.
Ambient temperature is sensed and compared to the programmed
setpoint. The OUT and OUT outputs are driven to their active state
when the measured temperature exceeds the programmed setpoint.
The NCT22 has a power supply voltage range of 4.5 V to 18 V
while the NCT24 operates over a power supply range of 2.7 V to 4.5 V.
Both devices are useable over a temperature range of 鈥?0擄C to
+125擄C. Both devices feature low supply current making them
suitable for many portable applications.
The devices are offered in surface mount packages.
Features
http://onsemi.com
MARKING
DIAGRAM
8
8
1
xx
A
L
Y
W
SOIC鈥?
D SUFFIX
CASE 751
1
= 22 or 24
= Assembly Location
= Wafer Lot
= Year
= Work Week
NCTxx
ALYW
鈥?/div>
Temperature Set Point Easily Programs with a Single External
Resistor
鈥?/div>
Operates with 2.7 V Power Supply (NCT24)
鈥?/div>
Small SOIC Package
鈥?/div>
Cost Effective
Applications
PIN CONNECTIONS
N/C 1
OUT 2
OUT 3
GND
4
(Top View)
NCT22
NCT24
8 N/C
7 V
DD
6
N/C
5 T
SET
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Power Supply Over鈥揟emperature Detection
Consumer Electronics
Fire/Heat Detection
UPSs, Amplifiers, Motors
CPU Thermal Management in PCs
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
+9 V
+
9V
Battery
鈥?/div>
R
SET
1
Sensor
Sounder
NCT22
7
NC
V
DD
8
5
T
SET
NC
6
4
NC
OUT 3
2
CONTROL
ASIC
GND OUT
ALARM
Figure 1. Heat Monitor for Smoke Detector
漏
Semiconductor Components Industries, LLC, 2000
1
December, 2000 鈥?Rev. 0
Publication Order Number:
NCT22/D
NCT24DR2相關(guān)型號PDF文件下載
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英文版
Low Cost Single Trip Point Temperature Sensor
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英文版
Low Cost Single Trip Point Temperature Sensor
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英文版
Low Cost Single Trip Point Temperature Sensor
ETC
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英文版
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英文版
ETC
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ETC
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Ultra small size, light weight.
DBLECTRO
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Ultra small size, light weight.
DBLECTRO [DB Le...
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英文版
SENSOR TEMPERATURE I2C 8WDFN
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