ST STEVAL-1PS03A User Manual

Getting started with the STEVAL-1PS03A evaluation board based on
Introduction
The STEVAL-1PS03A is an evaluation board for a smart converter design able to deliver up to 400 mA output current from a 1.8
to 5.5 V input, with a 1.6 to 3.3 V dynamically adjustable output voltage.
The board features the ST1PS03AQTR
enhanced peak current control (PCC) and advanced design circuitry to minimize quiescent current. The device embeds a
controlled load switch to supply a subsystem with VIN_AUX voltage rail.
The STEVAL-1PS03A demonstrates how highly efficient conversion can be achieved thanks to the
TQFN12 package of 2.0x1.7 mm), a 2.2 μH inductor, and two small capacitors.
The ST1PS03AQTR key application benefits include high efficiency, and small PCB size and thickness. It is extremely suitable
for power conversion solutions in wearable applications and fitness accessories, personal tracking monitoring, smart watches,
sport bands, energy harvesting, wireless sensors, industrial sensors, portable low-power devices, single cell Li-ion battery
applications, as well as Bluetooth
UM2944 - Rev 1 - October 2021
For further information contact your local STMicroelectronics sales office.
nano-quiescent miniaturized synchronous step-down converter, which implements
®
low energy and Zigbee applications.
Figure 1. STEVAL-1PS03A evaluation board
UM2944
User manual
ST1PS03AQTR
ST1PS03AQTR (in a thin
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