TLC5954: TLC5954 & TLC59281 in series

Kanava Sait Abdul Kathar

Prodigy 90 points

Part Number: TLC5954
Other Parts Discussed in Thread: TLC59281,

Hi,

Can I use TLC5954 (1No) and TLC59281 (3 Nos) in series?

-Kanava

over 7 years ago

0 Kenneth Du over 7 years ago

TI__Genius 14295 points

Hi, Kanava,

Not a problem.

Please help to click "Resolve" if the problem is solved.

Thanks.
Regards,
Kenneth

0 Kanava Sait Abdul Kathar over 7 years ago in reply to Kenneth Du

Prodigy 90 points

Kenneth,

Thanks for your response.

I want to drive 45 bi-color LEDs by using these devices in series (TLC5954 + TLC59281) and I want to have a common current sink settings for both devices.

Is it doable? Because TLC59281 needs external resistor to configure sink current, TLC5954 needs serial interface to configure sink current.

For example:

constant sink current - 10.7mA

a. TLC59281 -> 4.7K on IREF pin

b. TLC5954

MC Values: OUTR->0x5, OUTG->0x5, OUTB->0x5

BC values: OUTR->0x4B, OUTG->0x4B, OUTB->0x6F

Thanks

Kanava

0 Kanava Sait Abdul Kathar over 7 years ago in reply to Kanava Sait Abdul Kathar

Prodigy 90 points

Any update?

-Kanava

0 Kenneth Du over 6 years ago in reply to Kanava Sait Abdul Kathar

TI__Genius 14295 points

Hi, Kannava,

Sorry for the delay and find you're asking in another thread.

It has been answered and please help to click reslove.

Thanks.
Regards,
Kenneth

Power management

Power management forum

TLC5954: TLC5954 & TLC59281 in series