- 制造厂商:TI
- 产品类别:电源管理
- 技术类目:电压基准 - 并联电压基准
- 功能描述:1%、低电压 (1.24V) 可调节精密并联稳压器
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The LMV431, LMV431A and LMV431B are precision 1.24 V shunt regulators capable of adjustment to 30 V. 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 1.24 V band-gap reference. Shorting the cathode to the adjust pin (voltage follower) provides a cathode voltage of a 1.24 V.
The LMV431, LMV431A and LMV431B have respective initial tolerances of 1.5%, 1%, and 0.5%, and functionally lend themselves to several applications that require zener diode type performance at low voltages. Applications include a 3 V to 2.7 V low drop-out regulator, an error amplifier in a 3 V off-line switching regulator and even as a voltage detector. These parts are typically stable with capacitive loads greater than 10 nF and less than 50 pF.
The LMV431, LMV431A and LMV431B provide performance at a competitive price.
- Low-Voltage Operation/Wide Adjust Range (1.24 V/30 V)
- 0.5% Initial Tolerance (LMV431B)
- Temperature Compensated for Industrial Temperature Range (39 PPM/°C for the LMV431AI)
- Low Operation Current (55 μA)
- Low Output Impedance (0.25 Ω)
- Fast Turn-On Response
- Low Cost
- VO (V)
- 1.24
- Reference voltage
- Adjustable
- Initial accuracy (Max) (%)
- 1
- VO adj (Min) (V)
- 1.24
- VO adj (Max) (V)
- 30
- Iz for regulation (Min) (uA)
- 80
- Rating
- Catalog
- Temp coeff (Max) (ppm/ degree C)
- 129, 138
- Operating temperature range (C)
- -40 to 85, 0 to 70
- Iout/Iz (Max) (mA)
- 15
LMV431A的完整型号有:LMV431ACM5/NOPB、LMV431ACM5X/NOPB、LMV431AIM5/NOPB、LMV431AIM5X/NOPB、LMV431AIMF/NOPB、LMV431AIMFX/NOPB、LMV431AIZ/LFT3、LMV431AIZ/NOPB、LMV431ACM5、LMV431AIM5、LMV431AIM5X、LMV431AIMF、LMV431AIMFX,以下是这些产品的关键参数及官网采购报价:
LMV431ACM5/NOPB,工作温度:0 to 70,封装:SOT-23 (DBV)-5,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431ACM5/NOPB的批量USD价格:.307(1000+)
LMV431ACM5X/NOPB,工作温度:0 to 70,封装:SOT-23 (DBV)-5,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431ACM5X/NOPB的批量USD价格:.256(1000+)
LMV431AIM5/NOPB,工作温度:-40 to 85,封装:SOT-23 (DBV)-5,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431AIM5/NOPB的批量USD价格:.307(1000+)
LMV431AIM5X/NOPB,工作温度:-40 to 85,封装:SOT-23 (DBV)-5,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431AIM5X/NOPB的批量USD价格:.256(1000+)
LMV431AIMF/NOPB,工作温度:-40 to 85,封装:SOT-23 (DBZ)-3,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431AIMF/NOPB的批量USD价格:.307(1000+)
LMV431AIMFX/NOPB,工作温度:-40 to 85,封装:SOT-23 (DBZ)-3,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SN,TI官网LMV431AIMFX/NOPB的批量USD价格:.256(1000+)
LMV431AIZ/LFT3,工作温度:PropertyValue,封装:TO-92 (LP)-3,包装数量MPQ:2000个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:SN,TI官网LMV431AIZ/LFT3的批量USD价格:.256(1000+)
LMV431AIZ/NOPB,工作温度:-40 to 85,封装:TO-92 (LP)-3,包装数量MPQ:1800个,MSL 等级/回流焊峰值温度:N/A for Pkg Type,引脚镀层/焊球材料:SN,TI官网LMV431AIZ/NOPB的批量USD价格:.256(1000+)
LMV431ACM5,工作温度:0 to 70,封装:SOT-23 (DBV)-5,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LMV431ACM5的批量USD价格:.41(1000+)
LMV431AIM5,工作温度:-40 to 85,封装:SOT-23 (DBV)-5,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LMV431AIM5的批量USD价格:.41(1000+)
LMV431AIM5X,工作温度:-40 to 85,封装:SOT-23 (DBV)-5,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LMV431AIM5X的批量USD价格:.358(1000+)
LMV431AIMF,工作温度:-40 to 85,封装:SOT-23 (DBZ)-3,包装数量MPQ:1000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LMV431AIMF的批量USD价格:.41(1000+)
LMV431AIMFX,工作温度:-40 to 85,封装:SOT-23 (DBZ)-3,包装数量MPQ:3000个,MSL 等级/回流焊峰值温度:Level-1-260C-UNLIM,引脚镀层/焊球材料:SNPB,TI官网LMV431AIMFX的批量USD价格:.358(1000+)
LMV431A PSpice Transient Model
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SHUNT_VOLTAGE_REFERENCE_RESISTOR_CALCULATOR — 分流参考电压外部电阻快速入门计算器
这一外部电阻快速入门计算器工具让用户可以根据电压基准、电源和负载电流限值轻松计算有效的外部电阻值。使用这些输入,用户可以马上查看计算结果并通过以颜色标记的指示了解计算出的输出是否有效。