LTC3526-2 Quiescent Current Consumption

gp_ss

LTC3526-2 DS specifies the Quiescent Current as up to 500uA,  the  60uA to 170uA looks inside the range. 

Thanks for the reply Victor!

When we isolate the LTC3526-2 & rest of the circuit, we observe that on no load, the current consumption of LTC3526-2 is over the 60 - 170 uA range. 

According to the DS (Burst mode Operation), the part is supposed to automatically enter Burst mode on light loads. So, I was assuming LTC3526-2 to be in burst mode when running on no-load, is that right or am I missing something?

LTC3525-2 will be in burst mode at light load. The quiescent current listed in the Electrical Characteristic table is the current consumption of the part itself. The current that is measured at the input side also includes the current from Vout through the feedback resistor, and the leakage current of the input cap. Since the quiescent current is very low, you also need to disconnect any load from the board, including any test instrument at the output.

LTC3525-2 will be in burst mode at light load. The quiescent current listed in the Electrical Characteristic table is the current consumption of the part itself. The current that is measured at the input side also includes the current from Vout through the feedback resistor, and the leakage current of the input cap. Since the quiescent current is very low, you also need to disconnect any load from the board, including any test instrument at the output.