參數(shù)資料
型號(hào)： celeron cpu Mobile Module
廠商： Intel Corp.
英文描述： processor Mobile Module Connector 1 (MMC-1) at 466 MHz and 433MHZ(工作頻率466和433兆赫茲帶連接器1處理器)
中文描述： 移動(dòng)處理器模塊連接器1（MMC管理- 1）在466 MHz和433MHz的（工作頻率466和433兆赫茲帶連接器1處理器）
文件頁(yè)數(shù)： 33/42頁(yè)
文件大小： 448K
代理商： CELERON CPU MOBILE MODULE
29
Celeron
Processor Mobile Module MMC-1
at 466 MHz and 433 MHz
maximum input voltage of 18 volts, use a 35-volt, low ESR
capacitor with high ripple current capability. Place five, 22-
microfarad/35-volt capacitors on the baseboard directly at
the V_DC pins of the connector.
The slew-rate control circuit should also be applied to every
input power source to the system V_DC to provide the most
protection. If all power is logically “OR’ed” together at the
PWR node, there is still a potential problem. For example, if
a 3X3 Li-Ion battery pack is powering the system (12 volts at
PWR), and the AC Adaptor (18 volts) is plugged into the
system, it will immediately source current to the PWR node
and V_DC rapidly. This is because the slew-rate control is
already ON. Therefore, the slew-rate control must be applied
to every input power source to provide the most protection.
Figure 9. Spice Simulation Using In-rush Protection (Example Only)
4.7.4.2
Undervoltage Lockout: Circuit Description
(V_uv_lockout)
The circuit shown in Figure 8 provides an undervoltage
protection and locks out the applied voltage to module to
prevent an accidental turn-on at low voltage. The output of
this circuit, pin 1 of the LM339 comparator, is an open-
collector output. It is low
when the applied voltage at PWR is less than 4.75 volts.
This voltage can be calculated with the following equation
with the voltage across D7 as 2.5 volts (D7 is a 2.5-volt
reference generator).
V_uv_lockout
Vre.
R17
R18.
R18
R25
=
V_uv_lockout
4.757 volts
相關(guān)PDF資料
PDF描述
celeron CPU with Mobile Module processor Mobile Module Connector 2 (MMC-2) at 466 MHz and 433MHZ(工作頻率466和433兆赫茲帶連接器2處理器)
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