- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄358877 > LM93CIMT (NATIONAL SEMICONDUCTOR CORP) Hardware Monitor with Integrated Fan Control for Server Management PDF資料下載
參數(shù)資料
| 型號(hào)： | LM93CIMT |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 電源管理 |
| 英文描述： | Hardware Monitor with Integrated Fan Control for Server Management |
| 中文描述： | 16-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO56 |
| 封裝： | MO-153EE, TSSOP-56 |
| 文件頁數(shù)： | 13/92頁 |
| 文件大?。?/td> | 654K |
| 代理商： | LM93CIMT |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁當(dāng)前第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁
12.0 Functional Description
(Continued)
provide a nominal
should be scaled to provide a nominal
1
4
scale reading. The
thevenin resistance at the pin should be kept between 1 k
and 7 k
.
The 12V monitoring is particularly challenging. It is required
that an external offset voltage and external resistors be used
3
4
full scale reading, while the 12V
to bring the 12V rail into the positive input voltage region of
theA/D input. It is suggested that the supply rail for the LM93
device be used as the offset voltage. This voltage is usually
derived from the P/S 5V stand-by voltage rail via a
±
1%
accurate linear regulator. In this fashion we can always
assume that the offset voltage is present when the 12V rail
is present as the system cannot be turned on without the
3.3V stand-by voltage being present.
Voltage vs Register Reading
Pin
Normal
Use
Nominal
Voltage
Register
Reading
at
Nominal
Voltage
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
C0h
40h
C0h
Maximum
Voltage
Register
Reading at
Maximum
Voltage
Minimum
Voltage
Register
Reading at
Minimum
Voltage
Absolute
Maxmum Range
AD_IN1
AD_IN2
AD_IN3
AD_IN4
AD_IN5
AD_IN6
AD_IN7
AD_IN8
AD_IN9
AD_IN10
AD_IN11
AD_IN12
AD_IN13
AD_IN14
AD_IN15
AD_IN16
Application Note:
The nominal voltages listed in this table are only typical values. Voltage rails with different nominal voltages can be monitored, but the register
reading at the nominal value is no longer C0h. For example, a Mem_Core rail at 2.5V nominal could be monitored with AD_IN12, or a Mem_Vtt rail at 1.2V could
be monitored with AD_IN13.
+12V1
+12V2
+12V3
FSB_Vtt
3GIO
ICH_Core
Vccp1
Vccp2
+3.3V
+5V
SCSI_Core
Mem_Core
Mem_Vtt
Gbit_Core
12V
+3.3V S/B
0.927V
0.927V
0.927V
1.20V
1.5V
1.5V
1.20V
1.20V
3.30V
5.0V
2.5V
1.969V
0.984V
0.984V
0.309V
3.3V
1.236V
1.236V
1.236V
1.60V
2V
2V
1.60V
1.60V
4.40V
6.667V
3.333V
2.625V
1.312V
1.312V
1.236V
3.6V
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FFh
FAh
FFh
FFh
FFh
FFh
FFh
D1h
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
0V
3.0V
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
00h
AEh
0.3V to (V
DD
+ 0.05V)
0.3V to (V
DD
+ 0.05V)
0.3V to (V
DD
+ 0.05V)
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.5V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to +6.0V
0.3V to (V
DD
+ 0.05V)
0.3V to +6.0V
12.5 RECOMMENDED EXTERNAL SCALING RESISTORS FOR +12V POWER RAILS
The +12V inputs require external scaling resistors. The re-
sistors need to scale 12V down to 0.927V.
Required External Scaling
Resistors for +12V Power Input
20068208
To calculate the required ratio of R1 to R2 use this equation:
It is recommended that the equivalent thevenin resistance of
the divider be between 1k and 7k to minimize errors caused
by leakage currents at extreme temperatures. The best val-
ues for the resistors are: R1=13.7 k
and R2=1.15 k
. This
yields a ratio of 11.94498, which has a +0.27% deviation
from the theoretical. It is also recommended that the resis-
tors have
±
1% tolerance or better.
Each LSB in the voltage value registers has a weight of 12V
/ 192 = 62.5 mV. To calculate the actual voltage of the +12V
power input, use the following equation:
V
IN
= (8-bit value register code) x (62.5 mV)
12.6 RECOMMENDED EXTERNAL SCALING CIRCUIT
FOR 12V POWER INPUT
The 12V input requires external resistors to level shift the
nominal input voltage of 12V to +0.309V.
L
www.national.com
13
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LM93CIMTX | LJT 6C 6#12 PIN PLUG |
| LM95010 | Digital Temperature Sensor with SensorPath⑩ Bus in MSOP8 Package |
| LM95010CIMMX | Digital Temperature Sensor with SensorPath⑩ Bus in MSOP8 Package |
| LM95010CIMM | Digital Temperature Sensor with SensorPath⑩ Bus in MSOP8 Package |
| LM95071 | SPI/MICROWIRE⑩ 13-Bit Plus Sign Temperature Sensor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LM93CIMT/NOPB | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LM93CIMTX | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LM93CIMTX/NOPB | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| LM94 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TruTherTM Hardware Monitor with PI Loop Fan Control for Server Management |
| LM94021 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Multi-Gain Analog Temperature Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。