Battery Management Stand-alone or IC controlled 70-V bidirectional buck-boost charge controller with MPPT 36-VQFN -40 to 85
1
595-BQ25756RRVR
https://www.mouser.co.uk/ProductDetail/Texas-Instruments/BQ25756RRVR?qs=HoCaDK9Nz5ckDWwb4xOATA%3D%3D
Texas Instruments
BQ25756RRVR