Required minimum input amperage on LTC3105

Hi guys,

First time poster here.

I am working on an invention that havests low renewable energy to slowly charge a rechargeable button cell and I am interested in using the LTC3105 to boost the ouput.

Does anyone know the minimum mA required for the circuit?

Also from the data sheet for the LTC3105, the graph for input voltage vs output current suggests that 0.9v input would give 50mA output - can you clarify this please?


  • 0
    •  Analog Employees 
    on Sep 10, 2018 1:36 PM


    What is the operating input and output voltage and current you are looking for energy harvesting. What is the input source? Input source's effective voltage and current is a key factor to select a part for the application.

    The graph in datasheet of LTC3105 means that for Vout= 5V, at 0.9V input voltage maximum load current possible is 50mA. Minimum current required for the circuit depends on the input and output voltage . There is graph in the datasheet for No-Load Input current vs Input Voltage.