參數(shù)資料
型號(hào)： LMV431CMWC
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 基準(zhǔn)電壓源/電流源
英文描述： 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, UUC
封裝： WAFER
文件頁(yè)數(shù)： 9/18頁(yè)
文件大小： 596K
代理商： LMV431CMWC
National P/N LMV431 - Low-Voltage (1.24V) Adjustable Precision Shunt Regulators
LMV431C MWC
Full production
N/A
wafer jar
of
N/A
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LMV431I MWC
Full production
N/A
wafer jar
of
N/A
-
General Description
The LMV431, LMV431A and LMV431B are precision 1.24V shunt regulators capable of adjustment to 30V.
Negative feedback from the cathode to the adjust pin controls the cathode voltage, much like a non-inverting
op amp configuration (Refer to Symbol and Functional diagrams). A two resistor voltage divider terminated
at the adjust pin controls the gain of a 1.24V band-gap reference. Shorting the cathode to the adjust pin
(voltage follower) provides a cathode voltage of a 1.24V.
The LMV431, LMV431A and LMV431B have respective initial tolerances of 1.5%, 1% and 0.5%. The LMV431
and LMV431A are available in commercial and Industrial temperature ranges. The LMV431B is only available
in commercial temperature range.
The LMV431, LMV431A and LMV431B functionally lends themselves to several applications that require zener
diode type performance at low voltages. Applications include a 3V to 2.7V low drop-out regulator, an error
amplifier in a 3V off-line switching regulator and even as a voltage detector. These parts are typically stable
with capacitive loads greater than 10nF and less than 50pF.
The LMV431, LMV431A and LMV431B provide performance at a competitive price.
Features
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Low Voltage Operation/Wide Adjust Range (1.24V/30V)
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0.5% Initial Tolerance (LMV431B)
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Temperature Compensated for Industrial Temperature Range (39 PPM/°C for the LMV431AI)
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Low Operation Current (55A)
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Low Output Impedance (0.25 )
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Fast Turn-On Response
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Low Cost
Applications
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Shunt Regulator
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Series Regulator
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Current Source or Sink
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Voltage Monitor
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Error Amplifier
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3V Off-Line Switching Regulator
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Low Dropout N-Channel Series Regulator
Design Tools
Title
Size in Kbytes Date
View Online Download Receive via Email
LMV431 Qualification Package 792 Kbytes
24-Jun-1999 View Online
file:///H|/imaging/BITTING/cpl/20020808_1/08062002_10/NATL/08062002_HTML/LMV431.html (3 of 4) [09-Aug-2002 10:47:17 AM]
相關(guān)PDF資料
PDF描述
LMV431AIMDC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, UUC
LMV431IMWC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, UUC
LMV431ACMDC 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, UUC
LMV431ACZ/NOPB 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3
LMV431BCZ/NOPB 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, PBCY3
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LMV431CZ 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
LMV431CZ 制造商:Texas Instruments 功能描述:SHUNT REG ADJ +1.24-30V TO-92 431
LMV431CZ/NOPB 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
LMV431IM5 功能描述:基準(zhǔn)電壓& 基準(zhǔn)電流 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:Voltage References 拓?fù)浣Y(jié)構(gòu):Shunt References 參考類型:Programmable 輸出電壓:1.24 V to 18 V 初始準(zhǔn)確度:0.25 % 平均溫度系數(shù)（典型值）:100 PPM / C 串聯(lián) VREF - 輸入電壓（最大值）: 串聯(lián) VREF - 輸入電壓（最小值）: 分流電流（最大值）:60 mA 最大工作溫度:+ 125 C 封裝 / 箱體:SOT-23-3L 封裝:Reel
LMV431IM5 制造商:Texas Instruments 功能描述:SHUNT REG ADJ +1.24/30V SOT-23-5
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