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參數(shù)資料
| 型號： | TC74A7-5.0VAT |
| 廠商： | Microchip Technology |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 338K |
| 描述： | IC DGTL THERM SNSR 5.0V TO220-5 |
| 標準包裝： | 50 |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部 |
| 感應(yīng)溫度： | -40°C ~ 125°C |
| 精確度： | ±3°C（最小值） |
| 拓撲： | ADC（三角積分型），寄存器庫 |
| 輸出類型： | I²C?/SMBus? |
| 輸出警報： | 無 |
| 輸出風(fēng)扇： | 無 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | TO-220-5 |
| 供應(yīng)商設(shè)備封裝： | TO-220-5 |
| 包裝： | 管件 |
| 其它名稱： | TC74A75.0VAT |
?2002 Microchip Technology Inc.
DS21462C-page 1
M
TC74
Features
" Digital Temperature Sensing in SOT-23-5 or
TO-220 Packages
" Outputs Temperature as an 8-Bit Digital Word
" Simple SMBus/I
2
C" Serial Port Interface
" Solid-State Temperature Sensing:
- ?癈 (max.) Accuracy from +25癈 to +85癈
- ?癈 (max.) Accuracy from 0癈 to +125癈
" Supply Voltage of 2.7V to 5.5V
" Low Power:
- 200 礎(chǔ) (typ.) Operating Current
- 5 礎(chǔ) (typ.) Standby Mode Current
Applications
" Thermal Protection for Hard Disk Drives
and other PC Peripherals
" PC Card Devices for Notebook Computers
" Low Cost Thermostat Controls
" Power Supplies
" Thermistor Replacement
Package Types
General Description
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.
Communication with the TC74 is accomplished via a 2-
wire SMBus/I
2
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.
Temperature resolution is 1癈. Conversion rate is a
nominal 8 samples/sec. During normal operation, the
quiescent current is 200 礎(chǔ) (typ). During standby
operation, the quiescent current is 5 礎(chǔ) (typ).
Small size, low installed cost and ease of use make the
TC74 an ideal choice for implementing thermal
management in a variety of systems.
Functional Block Diagram
TO-220
SOT-23
V
DD
GND
1
2
NC
5
4
SDA
SCLK
TC74
3
1 2 3 4 5
TC74
Note: The TO-220 tab is connected
to pin 3 (GND)
Internal Sensor
(Diode)
?Modulator
Temperature
Register
Serial Port
Interface
Control
Logic
SDA
SCLK
Tiny Serial Digital Thermal Sensor
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