LM3519: LM3519MK-20/NOPB

Roy Chan

Part Number: LM3519
Other Parts Discussed in Thread: TPS92360

Hi Expert:

I'm checking with customer design 3S7P LED backlight design LM3519MK-20/NOPB , I check output power relative input inductor peak current under switch current limit 750mA spec.

I attached design output LED backlight spec and schematic , can you help double check review is ok or not?

thank you

Roylm3519.pdf

over 2 years ago

0 Patrick Yao over 2 years ago

TI__Mastermind 30900 points

Hi Roy,

I'll review the schematic and give you feedback on next Monday, sorry for the inconvenience and thanks for your patience.

Patrick

0 Roy Chan over 2 years ago in reply to Patrick Yao

TI__Expert 3035 points

Hi Patrick:

ok, could you give review comment on Monday?

thank you very much

0 Patrick Yao over 2 years ago in reply to Roy Chan

TI__Mastermind 30900 points

Hi Roy,

Since this device didn't have EVM, so it's hard to give a conclusion without bench test under such condition.

And except for current limit concern, I also concern about whether the current will distribute evenly on each string.

And why didn't customer choose the multi-channel LED drivers?

Patrick

0 Roy Chan over 2 years ago in reply to Patrick Yao

TI__Expert 3035 points

Hi Patrick:

Thank you for your information, because this application is only one channel input and Feedback connect for each series and parallel LED from the LED panel spec, do you have other suggest solution can suggest to me for the application ?

thank you

Roy

0 Patrick Yao over 2 years ago in reply to Roy Chan

TI__Mastermind 30900 points

Hi Roy,

For one channel LED drivers, I would like to recommend TPS92360.

VIN: 2.7V~5.5V
ILED: 400mA Max
Package: 2mm x 1.25mm SOT(5)

For more info, please refer to datasheet: TPS92360

Patrick

Power management

Power management forum

LM3519: LM3519MK-20/NOPB