I'm designing a LiPo battery charger using MP2617 power management IC. When I referred to the datasheet it tells that these ICs have an internally integrated voltage regulator for the battery charging. Now my problem is this IC was rated up to 5-14V as Input. Now I have solar panel rated up to 12V/3A. But as it's a solar panel power source the voltage was not constant at all situation, so did I need to integrate an external voltage regulator(LM2596) to step down the input voltage from the solar panel to make the supply of MP2617 constant?
Thanks in advance