charge pump capacitor values

Gary Peek

Other Parts Discussed in Thread: MAX232

On RS-232 interface chips like the MAX232 and similar, charge pump capacitor values are specified. Are there any problems associated with using larger value capacitors?

over 14 years ago

0 Ron Michallick over 14 years ago

TI__Guru**** 165236 points

Hello Gary,

I am not aware of any problems doing this, however I do not see any advantage.
The driver output current will not be increased.

Regards,
Ron M.

0 Gary Peek over 14 years ago in reply to Ron Michallick

Prodigy 20 points

Thanks for the reply. Someone suggested that larger capacitors might cause the power supplies to take longer to get up to their nominal values, and that if a transmission or reception occurred before that, that it might cause a communication error.

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charge pump capacitor values