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The ST1PS03 is a nano-quiescent miniaturized synchronous step-down converter, which is able to provide up to 400 mA output current with an input voltage ranging from 1.8 V to 5.5 V. This converter is specifically designed for applications where high efficiency, PCB size and thickness are the key factors.
The output voltage can be set using three digital control inputs, a VOUT from 1.6 V to 3.3 V can be dynamically selected. Thanks to the enhanced PCC (peak current control) the ST1PS03 reaches very high efficiency conversion using just a 2.2 µH inductor and two small capacitors. An advanced design circuitry is developed to minimize the quiescent current. The device embeds a controlled switch accessible from VIN_AUX, to supply a subsystem. Finally, it is available in thin plastic package.
