MAX77831 High-Efficiency Buck-Boost Converter Analog Devices MAX77831 High-Efficiency Buck-Boost Converter is designed for systems requiring a wide input voltage range (2.5V to 16V). The MAX77831 supplies 18W of continuous output power, for example, up to 2A at 9V (VIN ≥ 4V). The MAX77831 Converter has a 5V default output voltage when using internal feedback resistors. The Converter can also be configured to any default output voltages between 3V and 15V when using external feedback resistors. The IC only operates in forced-PWM (FPWM) mode.