The RT9992ZQW is a DC-DC Converters Step-Up, Step-Down, Step-Up/Step-Down Adjustable (Fixed) 5 WQFN-32_EP_4x4mm RoHS power management IC manufactured by Richtek. It is an ultra-compact multi-topology DC-DC converter that operates from input voltages of 2.7V to 5.5V while providing up to 5 watts of power. The device offers various topologies, including Step-Up, Step-Down, and Step-Up/Step-Down adjustable output voltage. The high switching frequency of up to 2.4MHz enables compact inductors and capacitors. It also features excellent output voltage accuracy, low quiescent current, adjustable operating current limit, and adjustable soft start for improved system performance. The RT9992ZQW also has over temperature protection, output short-circuit protection, and over voltage protection to ensure system stability.