Question about Iout max of LDO?

[letan]

How to calculate Iout,max of LDO?
And I have a question:
I have design a LDO with Vout=1.8v, Iomax=50mA. When I use this LDO with Rload=36ohm => Iload=50mA=Iomax, but if Rload < 36ohm => Iload > Iomax. Why? I'm wrong?
Can you please explain clearly for me?
Thanks.

 

[safwatonline]

u have Vout=1.8V and Iload=Vout/Rload=1.8/Rload so if Rload is less than 36 then Iload>50mA

Added after 1 minutes:

u have Vout=1.8V and Iload=Vout/Rload=1.8/Rload so if Rload is less than 36 then Iload>50mA
note here i assemed that Vout=1.8 which is fair assumption if the LDO loop is working (-ve feedback loop) which makes the range of Vout error =1/Loopgain which should be small in case of large loop gain

 

[ashish_chauhan]

The summary is ... assuming that the loop is regulating ....(so taht output remains constant) current is inversly proportional to resistance!!( V=IxR)

now calculate...

 

[keoiuser]

yes it's right, necessarily if rload decrease then Iload increase.
you can calculate Iload from the expression I=V/R and if you use a transistor element to load your circuit then calculate Iload from the I transistor equation.