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Need voltage regulator min o/p current less than 10 uA

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ahmed osama

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hi all

i need a low current voltage regulator

i need one with these spuc. i/p V : 9 - 5 Vdc
o/p V : 1.3 Vdc
Load current about 10 uA (must regulate at such current) (min o/p current less than 10 uA)

indeed i used to use a famous one LM317 but it's min o/p current more than 10 mA !!!! if the current less than that the voltage get rise and no regulation


thx all
 

Here is a couple of websites which can be a good starting point:
**broken link removed**
**broken link removed**

Regards,
IanP
 

If your power requirements are not too stringent, you can still use the LM317. Just make sure you have a "bleeder" resistor at the output, which can draw the 10mA that the LM317 requires. The output divider will also help typically 5mA (1.25V/240 ohm). That way the load can draw any current, down to 10uA.
Not an elegant solution, but an immediate one.
 

VVV said:
If your power requirements are not too stringent, you can still use the LM317. Just make sure you have a "bleeder" resistor at the output, which can draw the 10mA that the LM317 requires. The output divider will also help typically 5mA (1.25V/240 ohm). That way the load can draw any current, down to 10uA.
Not an elegant solution, but an immediate one.
Click to expand...

this idea came ofcourse to my mind , i even said i can put a led to consume such 10 mA but another problem came to me , the o/p voltage is 1.3 & the led need at least 2 volt !!!!!!!!
 

Why can't you connect a 130Ω resistor as suggested by VVV ?

Regards,
IanP
 

Then you will have to go for low quiescent current voltage regulators; there is no other altrnative to come close to 10µA of no-load current ..

Regards,
IanP
 

HI,

Use a micropower reference as a shunt regulator.
20 µA for the reference and 10 µA for the load.

on1aag
 

TPS71533, 50-mA, 3.3-V High Input-Voltage LDO Voltage Regulator in SC-70
Low 3.2-µA Quiescent Current at 50 mA
 

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