Maxim’s MAX77801 is a high-current, high-efficiency, buck-boost targeted to mobile applications that use a Li-ion battery or similar chemistries. It utilizes a four-switch H-bridge configuration to support buck and boost operating modes. Buck-boost provides 2.60 V to 4.1875 V of output voltage range and up to 2 A output current. A unique control algorithm allows high-efficiency; outstanding performances in line and load transient responses; and seamless transition between buck and boost modes. Dynamic voltage scaling (DVS) input allows the host processor to switch between two preprogrammed output voltages. This feature minimizes power loss for given load conditions. The ramp-up and ramp-down slew rates are programmable through I²C. The MAX77801 features I²C-compatibilty, a 2-wire serial interface consisting of a bidirectional serial-data line (SDA), and a serial-clock line (SCL). It supports SCL clock rates up to 3.4 MHz.