參數(shù)資料
型號(hào): Pentium III cpu with mobile
廠(chǎng)商: Intel Corp.
英文描述: Pentium III processor Mobile Module Connector 2 (MMC-2)(帶移動(dòng)模塊連接器2奔III處理器)
中文描述: 奔騰III處理器的移動(dòng)模塊連接器2(絲裂霉素2)(帶移動(dòng)模塊連接器2奔三處理器)
文件頁(yè)數(shù): 50/64頁(yè)
文件大?。?/td> 773K
代理商: PENTIUM III CPU WITH MOBILE
Pentium
III Processor Mobile Module MMC-2
44
Datasheet
245304-003
Figure 12. Undervoltage Lockout Model
VCEsat is the saturation voltage of the comparator output transistor.
The comparator trip point voltage can be calculated with
Equation 21
.
Equation 21.
If power to the mobile module is to be held off until V_DC exceeds 7.5V,
Equation 21
can be
rearranged to solve for R18.
Equation 22.
A value for R18 can be determined by plugging these values into
Equation 23
.
Equation 23.
R18 = 11.0 k
(4.99 k
is a standard 1% resistor value, which would provide lockout below 7.532V.)
5.3.4.7
Overvoltage Lockout
The mobile module operates with a maximum input voltage of 21.0V. This circuit can be set to
lock out the input voltage if it exceeds the desired input.
Undervoltage Lockout Model
+
VCEsat
2.5V
V_DC
R25
R18
R17
V_DC_UVlock
Vref
Vref
R18
Vref
VCEsat
R25
R17
R18
VrefR17
R25
.
)
R25 V_DC_UVlock Vref
(
R17 Vref
(
VCEsat
)
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