TLC6C5748-Q1: What does Vsat mean?

Lee, Sam

Expert 6025 points

Part Number: TLC6C5748-Q1

Hi team,

Can you explain Vsat mentioned in TLC6C5748-Q1?

In below equation, what does Vsat mean? Is it a headroom voltage to detect open fault?

VLED ≥ LED VF × Number of LED Lamps Connected in Series + 1.1 × VSAT

Thanks,

Sam Lee

over 3 years ago

0 Zhiqian Wu over 3 years ago

TI__Mastermind 31405 points

Hi,

Here is the explain of VSAT in datasheet.

0 Lee, Sam over 3 years ago in reply to Zhiqian Wu

TI__Expert 6025 points

Hi Zhiqian,

Yes, I checked the table. But my question is what does the saturation voltage mean and why is it needed. Could you please explain it?

Thanks,

Sam Lee

0 Zhiqian Wu over 3 years ago in reply to Lee, Sam

TI__Mastermind 31405 points

Hi,

When the supply connects to the chips, the output voltage is not equal to the supply. There are some loss in chips, which we call it VSAT. It is related with the output current.

0 Lee, Sam over 3 years ago in reply to Zhiqian Wu

TI__Expert 6025 points

Hi Zhiqian,

Thank you for your reply.

Best Regards,

Sam Lee

0 Zhiqian Wu over 3 years ago in reply to Lee, Sam

TI__Mastermind 31405 points

Hi, Sam

I will close this topic as the topic is solved

Power management

Power management forum

TLC6C5748-Q1: What does Vsat mean?