參數(shù)資料
型號： L4948
廠商： 意法半導體
英文描述： Quad Voltage Regulator with Inhabit and Reset(帶禁止和復位的四通道穩(wěn)壓器)
中文描述： 四電壓調(diào)節(jié)器的居住和復位（帶禁止和復位的四通道穩(wěn)壓器）
文件頁數(shù)： 7/9頁
文件大小： 132K
代理商： L4948
The STCAP pin acts like a delay circuit. Due to
the large capacitor(470
μ
F), the STCAP pin allows
the battery voltage to decay slowly giving the mi-
croprocessor time to store data. Also, duringshort
low voltage or negative voltage conditions, the
STCAP pin protects the 5V st-by output from
dropping below the RESET and LVW trip points
The four outputs are expected to follow the bat-
tery voltage down to 7V. At 7V typical the LVW
tells the microprocessor to stop operation and
save operating data Below 7V the outputsare ex-
pected to stay alive and ready for a return of bat-
tery.
The L4948 has a st-by mode to keep the micro-
processor and memories allive during an ignition
off conditions. The ON/OFF input pin in controlled
by the microprocessor. An high on the ON/OFF
pin places the part in normal mode. A low on the
ON/OFF pin places the part in st-by mode.V
01
,
V
02
, V
03
will be off duringst-by mode.
Graphs of the Output Curves for V
O1,2,3 and 4(Cont.)
Notes and Information
The followinginformation is for clarification, not for specification definition.
Please use the information in thisway.
L4948
7/9
相關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(用于汽車收音機的電壓穩(wěn)壓器)
L4953K Multifunction Voltage Regulator for Car Radio(用于汽車收音機的多功能電壓穩(wěn)壓器)
L4953 Multifunction Voltage Regulator for Car Radio(用于汽車收音機的多功能電壓穩(wěn)壓器)
L4954 Quad Multifunction Voltage Regulator for Car Radio(用于汽車收音機的多功能四電壓穩(wěn)壓器)
相關代理商/技術參數(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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(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 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(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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