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Single-cell linear charge controller

MCP73831 Internal Circuitry

Explore the internal circuitry and functional stages of MCP73831.

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Inside MCP73831

Charge control inside a compact IC outline.

MCP73831 compact functional cutaway:PMOS pass stage,current andvoltage loops,reference,charge-state control,thermalcontrol andSTATdriver.
Functional explanation; not a transistor-level die schematic.

Explore the circuit

Select a stage to see its role and connections

Sense current and voltage

Current and voltage loops control the integrated pass transistor.

Advance the charge phase

Factory options set the precharge, termination and recharge thresholds.

Report and protect

STAT indicates the phase; thermal control can reduce or suspend charging.

Component view