LM3549: Buck/Boost current limits (What for?)

a b

Part Number: LM3549

Reg 0x15

ILIMIT register sets the buck-boost converters current limit values.

The datasheet makes no mention of the use of these values? i.e. Why would I limit the current to 2Amps when the part can only deliver 700mA max?

Please advise what is the purpose of the BuckBoost current limit. Is this a performance issue or a safety issue? i.e. Current limit of the Buck/Boost inductor?

Regards,

Kilroy

over 4 years ago

0 Aaron Bing over 4 years ago

TI__Expert 4160 points

Hi Kilroy,

The current spec is also discussed under these thread: LM3549 output current limit && LM3549 output current setting

I noticed that you have numerous questions on this device. You could kindly reach out to TI's local team and apply for a set of evaluation board.

We have a software LM3549.exe available from this forum: LM3549.exe download to configurate registers and EEPROM.

Best Regards,

Aaron Bing

Power management

Power management forum

LM3549: Buck/Boost current limits (What for?)