LM3886: Rated output power data for Vs = +/- 24Vdc

Chipset

Part Number: LM3886

Hello,

In regards to Figure 33 of the LM3886 datasheet, can someone show me a graph of what the "Output Power vs Load Resistance" will look like for Vs = +/-24Vdc (instead of 28 or 35Vdc) for RL as shown again between 2 ohms and 40 ohms.

A .csv file with an emphasis on the values between 2ohms and 4 ohms would be most appreciated.

Thank you.

over 3 years ago

0 Shadow He over 3 years ago

TI__Mastermind 49800 points

The curve is more limited by the current, so with 24V, it's a little lower than 28V. You can take the corner will happen at around 64W, and the overall trend is similar.

0 Chipset over 3 years ago in reply to Shadow He

Prodigy 70 points

Thank you, Shadow. Are you able to provide a graph of this for reference? Will the linear function between 18W and approx 64W be the same as what is currently shown? And what would be the RL impedance at 64W? A graph or csv/text file would be best.

Please advise. Thanks.

+1 Dylan Yao over 3 years ago in reply to Chipset

TI__Genius 10830 points

Hello Chipset,

I looked into previous validation data, while didn't find this plot with +-24V supply. As this device was developed at 22 years before, it becomes quite difficult for us to get that validation board, setup the test bench and re-test again.

I would recommend to test with the board on your side, and just capture some interested points such as 2ohm and 4ohm condition.

Dylan

0 Chipset over 3 years ago in reply to Dylan Yao

Prodigy 70 points

Ok. Thank you.

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LM3886: Rated output power data for Vs = +/- 24Vdc