Datasheet > NCT22DR2

NCT22DR2

更新时间： 2024-09-17 23:53:27

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其他 - ETC		传感器换能器输出元件
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数据手册

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NCT22DR2 数据手册

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 –40°C to

+125°C. Both devices feature low supply current making them

suitable for many portable applications.

http://onsemi.com

MARKING

DIAGRAM

SOIC–8

D SUFFIX

CASE 751

NCTxx

ALYW

xx = 22 or 24

The devices are offered in surface mount packages.

= Assembly Location

= Wafer Lot

= Year

Features

• Temperature Set Point Easily Programs with a Single External

Resistor

= Work Week

• Operates with 2.7 V Power Supply (NCT24)

• Small SOIC Package

• Cost Effective

PIN CONNECTIONS

N/C

OUT

Applications

NCT22

NCT24

• Power Supply Over–Temperature Detection

• Consumer Electronics

OUT

GND

N/C

SET

• Fire/Heat Detection

• UPSs, Amplifiers, Motors

• CPU Thermal Management in PCs

(Top View)

ORDERING INFORMATION

See detailed ordering and shipping information in the package

dimensions section on page 5 of this data sheet.

+9 V

Sounder

9 V

Sensor

Battery

SET

–

NCT22

CONTROL

ASIC

SET

OUT

GND OUT

ALARM

Figure 1. Heat Monitor for Smoke Detector

Semiconductor Components Industries, LLC, 2000

Publication Order Number:

December, 2000 – Rev. 0

NCT22/D

12 3 4 5 6 7 8

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