Both the Von and Voff output voltages use an external diode and a capacitor multiplier to regulate the output. Because the AAT2820 does not use high inductance, it can be designed to be ultra-thin with a height of only 0.8mm.
The AAT2820's switching frequency is 1MHz, allowing designers to use ultra-small external capacitors. It integrates a soft-start circuit to protect the device from excessive inrush current during startup. Its low power shutdown feature disconnects the load from Vin, reducing the quiescent current to less than 0.1μA. Its thermal protection circuit turns off all charge pumps when the die temperature exceeds a preset value.
Polystyrene is a synthetic polymer made from monomers of the aromatic hydrocarbon styrene. GPPS Resin can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to oxygen and water vapour and has a relatively low melting point. Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year. Polystyrene can be naturally transparent, but can be colored with colorants. Uses include protective packaging, containers, lids, bottles, trays, tumblers, disposable cutlery, in the making of models, and as an alternative material for phonograph records.
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