TL431A 可编程精密
基准电压源的典型应用,适用于高电流并联稳压器、串联通稳压器。 TL431A、B
集成电路是三端可编程并联稳压二极管。这些单片 IC 电压基准作为低温度系数
齐纳二极管运行,可通过两个外部
电阻器将 Vref 编程为 36V。这些器件具有 1.0 mA 至 100 mA 的宽工作电流范围,典型动态阻抗为 0.22 欧姆。这些基准的特性使其成为数字电压表、电源和运算
放大器电路等许多应用中齐纳二极管的出色替代品
说明
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Typical Application for TL431A Programmable Precision References for High Current Shunt Regulator for Series Pass Regulator. The TL431A, B integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36V with two external resistors. These devices exhibit a wide operating current range of 1.0 mA to 100 mA with a typical dynamic impedance of 0.22 ohm. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies and op amp circuitry