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| 型號： | Pentium III cpu with mobile |
| 廠商： | Intel Corp. |
| 英文描述： | Pentium III processor Mobile Module Connector 2 (MMC-2)(帶移動模塊連接器2奔III處理器) |
| 中文描述： | 奔騰III處理器的移動模塊連接器2（絲裂霉素2）（帶移動模塊連接器2奔三處理器） |
| 文件頁數(shù)： | 36/64頁 |
| 文件大?。?/td> | 773K |
| 代理商： | PENTIUM III CPU WITH MOBILE |
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Pentium
III Processor Mobile Module MMC-2
30
Datasheet
245304-003
5.2
System Power Requirements
Table 20
provides the DC power supply design criteria.
NOTES:
1. V_DC is set for 12.0V in order to determine typical V_DC current.
2. V_DC is set for 7.5V in order to determine maximum V_DC current.
3. A 20-
μ
S duration.
4. This is V_DC dependent. See
Figure 7
for data of IDC-RMS vs. V_DC.
5. These values are system dependent.
6. Specifications labeled N/A are not applicable.
5.3
Processor Core Voltage Regulation
The DC voltage regulator (DC/DC converter) supports the core voltage and I/O ring voltage. The
DC voltage regulator provides the appropriate processor core voltage, the GTL+ bus termination
voltage, the processor sideband signal pullup voltage, and the clock driver buffer voltage. Of these
voltages, only the processor sideband pullup voltage (V_CPUPU) and the clock driver buffer
voltage (V_CLK) are delivered to the system electronics.
The DC voltage range is 7.5V ~ 21.0V from the system battery or power supply for mobile
applications.
5.3.1
Voltage Regulator Efficiency
There are three voltage regulators on the mobile module. These voltage regulators generate the
core voltage used by the CPU and the voltage for the CPU I/O ring voltage. The core voltage
regulator provides the required current from the V_DC supply and its relative efficiencies are
shown in
Table 21
and
Figure 5
. The V_CLK and Vtt voltage regulators tap the V_3 plane.
Table 20. System Power Requirements
Symbol
Parameter
Min
Nom
Max
Unit
Notes
V
DC
DC Input Voltage
7.5
12.0
21.0
V
I
DC
DC Input Current
0.1
2.6
5.0
A
Notes 1, 2
I
DC_RMS
RMS Ripple Current
N/A
N/A
7.5
A
Notes 4, 6
I
DC_Surge
Maximum Surge Current for V
DC
N/A
N/A
20.0
A
Notes 3, 6
V
5
Power Managed 5.0-V Supply
4.75
5.0
5.25
V
I
5
Power Managed 5.0-V Current, Operating
20.0
50.0
100.0
mA
I
5_Surge
Maximum Surge Current for V
5
N/A
N/A
1.5
A
Notes 3, 6
V
3
Power Managed 3.3-V Supply
3.135
3.3
3.465
V
I
3
Power Managed 3.3-V Current
0.8
1.2
3.0
A
I
3_Surge
Maximum Surge Current for V
3
N/A
N/A
4.0
A
Notes 3, 6
V
CPUPU
Processor I/O Ring Voltage
1.375
1.5
1.625
V
I
CPUPU
Processor I/O Ring Current
0.0
10.0
20.0
mA
V
CLK
Processor Clock Rail Voltage
2.375
2.5
2.625
V
I
CLK
Processor Clock Rail Current
24.0
35.0
80.0
mA
Note 5
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