The ST1PS03 is a nano-quiescent miniaturised 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 STMicroelectronics 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 its enhanced peak current control, the ST1PS03 reaches very high conversion efficiency using just a 2,2 µH inductor and two small capacitors.
Advanced design circuitry was developed to minimise the quiescent current and the device embeds a controlled switch accessible from VIN_AUX, to supply a subsystem. Finally, it is available in a thin plastic package.
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