Part Number:LM46001-Q1
Hello,
I have a question regarding the current consumption of the LM46001-Q1 @ no-load.
The datasheet indicates a typical operating quiescent current of 24uA under certain test conditions. In our application, the current consumption in the no load case is critical. However, our setup differs in several points from the specifications in the datasheet. The relevant section of our schematics is shown below:
The input voltage at Vin would be around 12V.
As it can be derived from the schematics, we are planning to have a switching frequency of 2.1MHz and a voltage output of 5V
Thus the values for R_fbt and R_fbb differ from the ones given in the datasheet, as well as the inductance (L102 with 6.8uH).
What would be the overall current consumption of this configuration without any load (i.e. I_out=0A)
What would be the behavior of the converter at very light loads regarding efficiency?
Best regards,
Johnny