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參數(shù)資料
| 型號： | intel Pentium II processor |
| 廠商： | Intel Corp. |
| 英文描述： | Pentium II Processor Mobile Module(帶移動模塊奔II處理器) |
| 中文描述： | 奔騰II處理器的移動模塊（帶移動模塊奔二處理器） |
| 文件頁數(shù)： | 35/46頁 |
| 文件大?。?/td> | 681K |
| 代理商： | INTEL PENTIUM II PROCESSOR |
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35
INTEL
PENTIUM
II PROCESSOR MOBILE MODULE MMC-1
4.7.4.3.
Over-Voltage Lockout: Circuit Description
(V_ov_lockout)
The Pentium
II processor mobile module is specified to
operate with a maximum input voltage of 21V. This circuit
locks out the input voltage if it exceeds the maximum 21V.
The output of this circuit, Pin 14 of the LM339 comparator, is
an open-collector output. It is low when the applied voltage
at PWR is more than 21V. This voltage can be calculated
with the following equation:
V_ov_lockout
.
.
Vref
R26
R26
R27
1
R24
R23
=
V_ov_lockout
20.998 volt
4.7.4.4.
Over-Current Protection: Circuit
Description
Figure 8 shows the circuit detecting an over-current
condition and cuts off the input. Two different current limit
trip points cause the different maximum current drain
at different input voltages. Assuming the AC Adaptor
is 18V and the battery is a 3x3 Li-Ion configuration with a
minimum voltage of 7.5V, the maximum current for the
above circuit can be calculated using the following
expression:
With AC Adaptor (I_wAdaptor):
I_wAdaptor
.
Vref
Vbe_Q1
R14
R13
R1
I_wAdaptor = 0.989
amp
Without AC Adaptor (I_woAdaptor):
I_woAdaptor
.
Vref
Vbe_Q1
R1.
R14
R33
R13
R1
I_woAdaptor = 2.375
amp
4.8.
Active Thermal Feedback
Table 21 identifies the addresses allocated for the SMBus
thermal sensor.
Table 21. Thermal Sensor SMBus Address Table
Fixed Address AD Bits (6:4)
Function
Selectable Address AD Bits (3:0)
Thermal Sensor
100
1110
Reserved
010
1010
Reserved
010
1011
NOTE
:
The thermal sensor used is compliant with SMBus addressing. Please refer to the
Pentium II processor Thermal Sensor Interface
Specification
.
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