30 µA of Quiescent Current To Transform IoT


The L6986, L6986F, and L6985F make-up ST’s new family of synchronous step-down switching converters (also known as buck regulators) for industrial applications with a high input voltage of 24 V. Faced with a myriad of constraints, technical specifications, and design considerations, choosing the right DC-DC converter can be an overwhelming process. Furthermore, when a failure forces a complete redesign of a power supply because a poorly chosen component leads to overwhelming heat dissipation, one quickly realizes that the margin for error is too small to make this a trivial matter.

The new DC-DC regulators first impress because they tolerate a broad range of input voltages, from 4 V to 38 V, to ensure that they are still useful in spite of an unstable power supply. This is crucial to guarantee that the buck regulators work in all sorts of applications, from smart factories that run multiple automated processes to buildings that suffer from an unreliable power grid. The components are also able to output a range of voltages from 0.85 V to the VIN (Voltage In), which means it’s possible to use them to power many different components. Ultimately, their impressive technical specifications are the fruits of their modern architecture.


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