Stand-alone or I²C-controlled 40V bidirectional buck-boost charger with power path

The BQ25690 is a fully integrated switch-mode buck-boost charger for 1- to 7 cell Li-ion batteries, Li-polymer batteries. Wide input voltage range from 2.5V to 36V supports applications powered from battery, standard USB-PD adapters and high voltage dedicated DC adapters. The device integrates 4 switching MOSFETs and all the converter loop compensation for small solution size with simple design. It uses NVDC power path management, regulating the system slightly above the battery voltage without dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. The device also supports the full input (sink) and output (reverse or source mode) voltage ranges for USB Type-C and USB power delivery (USB-PD) applications.