Rohm is claiming 97% efficient operation with a 200mA load and 2.8µA quiescent current from a buck-boost dc-dc converter that produces 2.5V or 3.3V (selectable) from 2.0-5.5V. Up to 1A is available at 3.3V with the input above 2.7V (see bottom table). This is all from a 1.20 x 1.60 x 0.57mm 12pin WL-CSP UCSP50L1C package, including the four ...

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