參數(shù)資料
型號(hào): pentium III processor
廠商: Intel Corp.
英文描述: 32 bit Processor Mobile Module(32 位帶移動(dòng)模塊處理器)
中文描述: 32位處理器的移動(dòng)模塊(32位帶移動(dòng)模塊處理器)
文件頁(yè)數(shù): 53/67頁(yè)
文件大?。?/td> 834K
代理商: PENTIUM III PROCESSOR
Pentium
III Processor Mobile Module MMC-2
Featuring Intel
SpeedStep
Technology
243356-005
Datasheet
47
Figure 13. 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 = 5.022 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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