Datasheet > 21462C

21462C

更新时间： 2024-09-16 02:55:43

品牌	Logo	应用领域
美国微芯 - MICROCHIP		传感器温度传感器
页数	文件大小	规格书
16页	326K
描述
Tiny Serial Digital Thermal Sensor

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数据手册

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21462C 数据手册

TC74

Tiny Serial Digital Thermal Sensor

Features

General Description

• Digital Temperature Sensing in SOT-23-5 or

The TC74 is a serially accessible, digital temperature

sensor particularly suited for low cost and small form-

factor applications. Temperature data is converted from

the onboard thermal sensing element and made

available as an 8-bit digital word.

TO-220 Packages

• Outputs Temperature as an 8-Bit Digital Word

• Simple SMBus/I C™ Serial Port Interface

• Solid-State Temperature Sensing:

- ±2°C (max.) Accuracy from +25°C to +85°C

- ±3°C (max.) Accuracy from 0°C to +125°C

• Supply Voltage of 2.7V to 5.5V

• Low Power:

Communication with the TC74 is accomplished via a 2-

wire SMBus/I C compatible serial port. This bus also

can be used to implement multi-drop/multi-zone

monitoring. The SHDN bit in the CONFIG register can

be used to activate the low power Standby mode.

- 200 µA (typ.) Operating Current

- 5 µA (typ.) Standby Mode Current

Temperature resolution is 1°C. Conversion rate is a

nominal 8 samples/sec. During normal operation, the

quiescent current is 200 µA (typ). During standby

operation, the quiescent current is 5 µA (typ).

Applications

Small size, low installed cost and ease of use make the

TC74 an ideal choice for implementing thermal

management in a variety of systems.

• Thermal Protection for Hard Disk Drives

and other PC Peripherals

• PC Card Devices for Notebook Computers

• Low Cost Thermostat Controls

• Power Supplies

Functional Block Diagram

• Thermistor Replacement

Internal Sensor

SDA

Package Types

(Diode)

Serial Port

Interface

SCLK

TO-220

SOT-23

SDA

SCLK

∆Σ Modulator

TC74

1 2 3 4 5

Control

Logic

TC74

Temperature

NC GND

Note: The TO-220 tab is connected

to pin 3 (GND)

 2002 Microchip Technology Inc.

DS21462C-page 1

12 3 4 5 6 7...16

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