The TPS61033 is a synchronous boost converter designed to operate from an input voltage supply range between 1.8 V and 5.5 V with a 5.5-A (typical) valley switch current limit. The TPS61033 typically operates at a quasi-constant 2.4-MHz frequency PWM at moderate-to-heavy load currents. At light load currents, the TPS61033 converter operates in power-save mode with PFM to achieve high efficiency over the entire load current range.