參數(shù)資料
型號(hào)： L4948
廠商： 意法半導(dǎo)體
英文描述： Quad Voltage Regulator with Inhabit and Reset(帶禁止和復(fù)位的四通道穩(wěn)壓器)
中文描述： 四電壓調(diào)節(jié)器的居住和復(fù)位（帶禁止和復(fù)位的四通道穩(wěn)壓器）
文件頁(yè)數(shù)： 6/9頁(yè)
文件大?。?/td> 132K
代理商： L4948
FUNCTIONAL DESCRIPTION
The L4948 includes a monitoring circuit to warn
the microprocessor if a low voltage or no voltage
conditionis occurring. Between 6.5V and 7.5V on
the STCAP pin, the LVW output will go low. This
tells the microprocessor to stop executing code
and save vital information. The reset output will
go low when V
04
drops 0.15V below it’s typical
reading. A reset will occur between a minimum of
TIMINGDIAGRAM
4.5 and a maximum of 5V on V
04
. When the V
04
drops between 4.5 and 5V
goes low. It is very important that the RESET out-
put doesn’t go above 0.75V until the V
04
output
has gone back above 4.75V (typical). The micro-
processor looks for a rising edge. So, any spike
will tell the microprocessor to start operating.
Once the STCAP line passes 7V (typical), the
LVW output will also return to highstate.
the RESET output
Graphs of the Output Curves for V
O1,2,3 and 4
5.0
5.0
7.8
L4948
6/9
相關(guān)PDF資料
PDF描述
L4949E Multifunction Very Low Drop Voltage Regulator(多功能低壓差電壓穩(wěn)壓器)
L4952 Voltage Regulator for Car Radio Applications(用于汽車(chē)收音機(jī)的電壓穩(wěn)壓器)
L4953K Multifunction Voltage Regulator for Car Radio(用于汽車(chē)收音機(jī)的多功能電壓穩(wěn)壓器)
L4953 Multifunction Voltage Regulator for Car Radio(用于汽車(chē)收音機(jī)的多功能電壓穩(wěn)壓器)
L4954 Quad Multifunction Voltage Regulator for Car Radio(用于汽車(chē)收音機(jī)的多功能四電壓穩(wěn)壓器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L4949 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:AC-DC Offline Switching Controllers/Regulators
L4949_06 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:100 mA, 5.0 V, Low Dropout Voltage Regulator with Power−On Reset
L4949D 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA w/Power-On RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4949DG 功能描述:低壓差穩(wěn)壓器 - LDO 5V 100mA w/Power-On Reset RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
L4949DG 制造商:ON Semiconductor 功能描述:Linear Voltage Regulator IC
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