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参数资料
| 型号： | LMV431CMWC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 基准电压源/电流源 |
| 英文描述： | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 1.24 V, UUC |
| 封装： | WAFER |
| 文件页数： | 9/18页 |
| 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
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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]
相关PDF资料 |
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 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LMV431CZ | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装: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:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LMV431IM5 | 功能描述:基准电压& 基准电流 RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| LMV431IM5 | 制造商:Texas Instruments 功能描述:SHUNT REG ADJ +1.24/30V SOT-23-5 |
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