Capacitor selection for PTR08100W

Christine Chuah

Other Parts Discussed in Thread: PTR08100W

In the datasheet Page 9, it states that a minimum 100uF input capacitance is required and ripple current rating of the electrolytic capacitor must be at least 750mArms.

Will 330uF Capacitor (Panasonic, EEUFC1E331) with an additional 22uF X5R (Murata GRM32ER61C226L) be too high?

As for the output capacitor, it mentioned that we need a minimum input of 100uF non-ceramic capacitor. Can we also use the same 330uF electrolytic capacitor with the 22uF ceramic capacitor on it?

Thanks.

over 13 years ago

0 Tom Guerin over 13 years ago

TI__Mastermind 38230 points

The PTR08100W minimum required polarized input and output capacitance is 100µF.

The 330uf Panasonic EEUFC1E331 with a rms ripple current rating of 755mA (ESR 90mΩ) can be used along with the 22uf ceramic on both the input and output buses..

Tom

0 Christine Chuah over 13 years ago in reply to Tom Guerin

Prodigy 160 points

Thanks

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Capacitor selection for PTR08100W