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參數(shù)資料
| 型號： | LM85 |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | Hardware Monitor with Integrated Fan Control |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, PDSO24 |
| 封裝： | QSOP-24 |
| 文件頁數(shù)： | 2/26頁 |
| 文件大?。?/td> | 261K |
| 代理商： | LM85 |
Connection Diagram
24 Pin QSOP
20035302
NS Package MQA24
Top View
LM85BIMQ or LM85CIMQ (55 units per rail), or
LM85BIMQX or LM85CIMQX (2500 units per tape and reel)
Information on the differences between the LM85BIMQ and LM85CIMQ can be found in
Section 6.0
. It is highly recommended
that all
new designs use the LM85BIMQ
.
Pin Descriptions
Symbol
SMBDAT
Pin
1
Typ
Name and Function/Connection
System Management Bus Data. Open-drain output. 5V tolerant,
SMBus 2.0 compliant.
System Management Bus Clock. Tied to Open-drain output. 5V
tolerant, SMBus 2.0 compliant.
Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
Voltage identification signal from the processor. This value is read
in the VID0–VID4 Status Register.
+3.3V pin. Can be powered by +3.3V Standby power if monitoring
in low power states is required. This pin also serves as the analog
input to monitor the 3.3V supply. This pin should be bypassed
with a 0.1μf capacitor in parallel with 100pf. A bulk capacitance of
approximately 10μf needs to be in the near vicinity of the LM85.
Ground for all analog and digital circuitry.
Analog input for +5V monitoring.
Analog input for +12V monitoring.
Analog input for +2.5V monitoring.
Analog input for +V
CCP
(processor voltage) monitoring.
S
Digital I/O
(Open-Drain)
Digital Input
SMBCLK
2
P
V
VID0
5
Digital Input
VID1
6
Digital Input
VID2
7
Digital Input
VID3
8
Digital Input
VID4
19
Digital Input
P
3.3V
4
POWER
GND
5V
12V
2.5V
V
CCP
3
20
21
22
23
GROUND
Analog Input
Analog Input
Analog Input
Analog Input
V
I
L
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