| ??? 03/15/07 03:06 Read: times |
#135023 - Yes, but... Responding to: ???'s previous message |
Erik said:
For "1uA @ 5V output" could you not just use a resistor and a zener? You mean something like the TL431? But these "zeners" do also draw a certain quiescent current to maintain regulation. Most of them need a cathode current of at least 100µA. But look at that one, I have found while googling: http://www.usmicrowaves.com/shuntreg/AS431.htm This chip seems to need only 1µA!! The two programming resistors will additionaly draw some µA, though. Kai |
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