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关于TL431 电流

Other Parts Discussed in Thread: TL431, TLV431A, TPS57040-Q1, TPS797

hi:

1、如图中, tl431的工作时的电流应该是大于1ma的?

2、TLV431A -Q1,是否代表典型电流为80 uA?

  • Low Operational Cathode Current, 80 µA Typ
如果不是,能否推荐低电流的型号,5V基准电压芯片,使用TPS57040-Q1,12V/5V 。
谢谢!!