STEVAL-1PS01DJR Evaluation Board STMicroelectronics STEVAL-1PS01DJR Evaluation Board is a development tool for the ST1PS01DJR 400mA nano-quiescent synchronous step-down converter. The converter can provide up to 400mA output current with a 1.8V to 5.5V input voltage range. The board is designed for applications in which high efficiency and printed circuit board size and thickness are factors. The ST1PS01 can use the enhanced peak current control (PCC) to achieve high-efficiency conversion with a 2.2µH inductor and two small capacitors. The advanced design circuitry reduces the quiescent current to a minimum.