The LTC3558 is a USB battery charger with dual high ef?ciency switching regulators. The device is ideally suited to power single-cell Li-Ion/Polymer based...
LTC3558 on Analog.com
When not using the buck regulator of LTC3558, no problem to connect these related pins as follows?
Hi Kazu, FB1, EN1 should be connected to GND. SW1 can float but will not hurt to connect to GND since EN1 also is connected to GND.