SPV1040 Light Load Efficiency

[Stalin]

What is the SPV1040 MPPT Charger's light load efficiency? In my application, the power from the Solar Panel goes down to 10mW. So, I'm interested, to know the output of SPV1040T when the input power is only several mW.  

From the datasheet, my application falls into the first row except the PIN is 10mW.   

[liaifat85]

Given that your application falls into the first row (where VIN=1.5VV_{IN} = 1.5VVIN​=1.5V and PINP_{IN}PIN​ is between 0.25W to 2W), the efficiency is listed as 80% to 90%. However, since your input power is significantly lower (10 mW), it is likely that the efficiency will decrease due to the challenges of maintaining high efficiency at low power levels in such circuits.

[Stalin]

Yes, it makes sense. Wondering if ST has tested such condition and is there any graph available for the light loads? My test results show the efficiency dips to 20% or below in such conditions.