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參數資料
型號: TC74A0-5.0VAT
廠商: Microchip Technology
文件頁數: 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: 溫度監控系統(傳感器)
傳感器類型: 內部
感應溫度: -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:
輸出風扇:
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
供應商設備封裝: TO-220-5
包裝: 管件
產品目錄頁面: 682 (CN2011-ZH PDF)
其它名稱: TC74A05.0VAT
?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 (typ.) Operating Current
-  5 礎 (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 (typ). During standby
operation, the quiescent current is 5 礎 (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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