參數(shù)資料
型號(hào): 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(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)
文件頁數(shù): 51/64頁
文件大?。?/td> 773K
代理商: PENTIUM III CPU WITH MOBILE
Pentium
III Processor Mobile Module MMC-2
245304-003
Datasheet
45
Figure 13. Overvoltage Lockout
The LM339 comparator is an open-collector output and is pulled low when the applied voltage at
V_DC is too high, thus disabling the Slew-rate circuit.
The model in
Figure 14
below will be used for component calculations.
Figure 14. Overvoltage Lockout Model
Assume that the desired V_DC Overvoltage Lockout is 21.0V. Using
Equation 24
, the input to the
non-inverting input of the OV Lockout comparator can be calculated with the following equations.
Overvoltage Lockout
M3 Gate
V_DC_A
R4
2.5V
V_DC
V_DC
LM339
R27
R23
R24
R26
V
ref
Let R4=100K
Let R24=100K
Let R26=1M
Let R27=1K
Overvoltage Lockout Model
Vinv
R23
R24
V_DC
Vref
Vnoninv
V_DC_A
R27
R26
R4
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