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TI

LMV431AIM5X/NOPB 德州仪器 TI 集成电路

1%、低电压 (1.24V) 可调节精密并联稳压器

封装 | 引脚SOT-23 (DBV) | 5

工作温度范围 (°C)-40 to 85

包装数量 | 包装

3,000 | LARGE T&R


LMV431A 的特性

  • 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

LMV431A 的说明

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.


标签:TI集成电路
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