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Power

MOSFET

Metal-Oxide-Semiconductor Field-Effect Transistor
A voltage-controlled switch. Used in regulators, motor drivers, reverse-polarity protection.

How it looks

Drawing: this is not on CORE3588, so it is drawn
gatedrainsourcea MOSFET symbol: voltage on the gate opens the drain to source path
The symbol, simplified. CORE3588 has no stand-alone MOSFET: its switch transistors Q1 and Q2 are a different kind (bipolar), and its load-switch chips hide MOSFETs inside.

How it works

A SWITCH CONTROLLED BY VOLTAGEgatedrainsourcegate at 0 V: switch opengatedrainsourcegate at 3.3 V: switch closedcurrent flows drain to source

Where it fits

Two flavours: N-channel and P-channel; their legs are drain / Source / Gate. A buck converter is built around them; so is reverse-polarity protection.

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