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參數(shù)資料
| 型號(hào)： | MIC280-0BM6 TR |
| 廠商： | Micrel Inc |
| 文件頁(yè)數(shù)： | 1/23頁(yè) |
| 文件大小： | 385K |
| 描述： | IC SUPERVISOR THERMAL SOT23-6 |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 系列： | IttyBitty® |
| 功能： | 溫度監(jiān)控系統(tǒng)（傳感器） |
| 傳感器類型： | 內(nèi)部和外部 |
| 感應(yīng)溫度： | -55°C ~ 125°C，外部傳感器 |
| 精確度： | ±2°C（最小值） |
| 拓?fù)洌?/td> | ADC，寄存器庫(kù) |
| 輸出類型： | SMBus? |
| 輸出警報(bào)： | 無(wú) |
| 輸出風(fēng)扇： | 無(wú) |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -55°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SOT-23-6 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-6 |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | MIC280-0BM6TR MIC280-0BM6TR-ND |
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May 2006
1
MIC280
MIC280
Micrel
MIC280
Precision IttyBitty" Thermal Supervisor
REV. 11/04
General Description
The MIC280 is a digital thermal supervisor capable of measur-
ing its own internal temperature and that of a remote PN junc-
tion. The remote junction may be an inexpensive commodity
transistor, e.g., 2N3906, or an embedded thermal diode such
as found in Intel Pentium* II/III/IV CPUs, AMD Athlon* CPUs,
and Xilinx Virtex* FPGA's. A 2-wire SMBus* 2.0 compatible
serial interface is provided for host communication. Remote
temperature is measured with ?癈 accuracy and 9-bit to
12-bit resolution (programmable). Independent high, low, and
over-temperature thresholds are provided for each zone.
The advanced integrating A/D converter and analog front-end
reduce errors due to noise for maximum accuracy and mini-
mum guardbanding. The interrupt output signals temperature
events to the host, including data-ready and diode faults.
Critical device settings can be locked to prevent changes and
insure failsafe operation. The clock, data, and interrupt pins
are 5V-tolerant regardless of the value of V
DD
. They will not
clamp the bus lines low even if the device is powered down.
Superior accuracy, failsafe operation, and small size make
the MIC280 an excellent choice for the most demanding
thermal management applications.
Typical Application
DATA
5
4
6
2
3
1
TO
ERIAL BUS
HOST
2N3906/?/DIV>
CPU DIODE
1800pF
MIC280
CLK
/INT
3V to 3.6V
3 ?/DIV>
10k
VDD
T1
GND
0.1礔
ceramic
MIC280 Typical Application
Features
" Measures local and remote temperature
" Highly accurate remote sensing
?癈 max., 60癈 to 100癈
" Superior noise immunity for reduced temperature guard-
bands
" 9-bit to 12-bit temperature resolution for remote zone
" Fault queues to further reduce nuisance tripping
" Programmable high, low, and over-temperature thresh-
olds for each zone
" SMBus 2 compatible serial interface including device
timeout to prevent bus lockup
" Voltage tolerant I/Os
" Open-drain interrupt output pin - supports SMBus Alert
Response Address protocol
" Low power shutdown mode
" Locking of critical functions to insure failsafe operation
" Failsafe response to diode faults
" Enables ACPI compliant thermal management
" 3.0V to 3.6V power supply range
" IttyBitty" SOT23-6 package
Applications
" Desktop, server and notebook computers
" Printers and copiers
" Test and measurement equipment
" Thermal supervision of Xilinx Virtex FPGA's
" Wireless/RF systems
" Intelligent power supplies
" Datacom/telecom cards
Micrel, Inc. " 2180 Fortune Drive " San Jose, CA 95131 " USA " tel + 1 (408) 944-0800 " fax + 1 (408) 474-1000 " http://www.micrel.com
IttyBiity is a trademark of Micrel, Inc.
*All trademarks are the property of their respective owners.
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