LM3410: LM3410: SEPIC LED Driver

Steven He92

Expert 2125 points

Part Number: LM3410

Dear Sir,

My customer have a spec as below, could I refer datasheet page 26 Fig-26 & Fig-31 to do this promotion?

Vin=3.5V~14V Vo=6V/ 1A

Please you kindly review & help provide suggestion.

Thanks!

Steven

over 6 years ago

0 Irwin Nederbragt over 6 years ago

TI__Mastermind 28655 points

Hello Steven,

It should be possible. The boot strap circuit won't be needed since the switch current will be too high if below 3V input. Vin to the IC will have to be provided separate from the input to the SEPIC power stage since the IC is not rated for 14V. The peak switch current minimum is 2.1A.

Best Regards,

0 Steven He92 over 6 years ago in reply to Irwin Nederbragt

Expert 2125 points

Dear Irwin,

Thanks for your comment.

Please you kindly review below circuit is OK ?

Thanks!

Steven

0 Irwin Nederbragt over 6 years ago in reply to Steven He92

TI__Mastermind 28655 points

Hello Steven,

Yes, it looks okay. if L1 and L2 are not a coupled inductor you may want to add a damper across C3 (if it is needed).

Best Regards,

Power management

Power management forum

LM3410: LM3410: SEPIC LED Driver