TS3USB221E: Charge Pump Function

Jim CHEN

Expert 4795 points

Part Number: TS3USB221E

Dear Team,

Could you help to elaborate more details about the charge pump?

I cannot find it in the spec.

What is the purpose of it?

Thank you.

Regards,

Jim

over 3 years ago

0 Brian Zhou over 3 years ago

TI__Guru** 105055 points

let me check with our desinger

0 Brian Zhou over 3 years ago in reply to Brian Zhou

TI__Guru** 105055 points

The device internally uses NFET switch in the data path. Typically The switch is driven at higher voltage at its gate to be able to pass I/O signals. This device supports higher I/O voltage compared to the supply voltage. This requires that we have an elevated voltage that is generated by an internal charge pump circuit.

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TS3USB221E: Charge Pump Function