App note: Battery protection using low-side FETs controlled by GPIOs

White paper from Renesas on using BFEs GPIO to control or monitor further battery status. Link here (PDF) In an MCU plus battery front end (BFE) controlled battery pack, GPIOs may operate as an alternate protection FET control path where low-side FETs are preferred. Use cases include extending the upper voltage range of battery IC […]

App note: Low-current charger provides battery backup from USB to 1-cell applications

Another app note from Maxim Integrated on small current battery management. Link here (PDF) The circuit provides a 1-cell Li ion backup battery charger for low-current devices performing resistor limited current sharing