參數(shù)資料
型號： L4946B
廠商： 意法半導(dǎo)體
英文描述： Quad Voltage Regulator with Inhibit and Reset(帶禁止和復(fù)位的四電壓穩(wěn)壓器)
中文描述： 四電壓調(diào)節(jié)器的抑制和復(fù)位（帶禁止和復(fù)位的四電壓穩(wěn)壓器）
文件頁數(shù)： 7/9頁
文件大?。?/td> 104K
代理商： L4946B
The STCAP pin acts like a delay circuit. Due to
the large capacitor(470
μ
F), the STCAPpin allows
the battery voltage to decay slowly giving the mi-
croprocessortime to storedata. 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 L4946 has a st-by mode to keep the micro-
processor and memories allive during an ignition
off conditions. The ON/OFFinput 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
willbe off duringst-by mode.
Graphsof the Output Curves for V
O1,2,3 and 4 (Cont.)
Notes and Information
The following information is for clarification, not for specification definition.
Please use the information in thisway.
L4946
7/9
相關(guān)PDF資料
PDF描述
L4946 Quad Voltage Regulator with Inhibit and Reset(帶禁止和復(fù)位的四電壓穩(wěn)壓器)
L4947PD 5V-0.5A Very Low Drop Regulator with Reset(帶復(fù)位低壓差穩(wěn)壓器)
L4947 Very Low Drop Voltage Regulator with Reset(帶復(fù)位的低壓差穩(wěn)壓器)
L4948 Quad Voltage Regulator with Inhabit and Reset(帶禁止和復(fù)位的四通道穩(wěn)壓器)
L4949E Multifunction Very Low Drop Voltage Regulator(多功能低壓差電壓穩(wěn)壓器)
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L4946SQ 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Output Capacitor-Less Audio Subsystem with Programmable National 3D
L4947 功能描述:低壓差穩(wěn)壓器 - LDO 5.0 Volt 0.5 Amp 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(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
L4947H 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 0.5A Positive 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(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
L4947L 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 0.5A Positive 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(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
L4947PD 功能描述:低壓差穩(wěn)壓器 - LDO 5.0V 0.5A Positive 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(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
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