TPD3S716-Q1: VIN bias

Shinji Tsuji

Genius 14179 points

Part Number: TPD3S716-Q1

Hi team,

Is it possible to supply VIN=3.3V using resistor divider from 5V(VBUS) supply?

There is no 3.3V rail in my board and would like to use 5V to generate 3.3V.

regards,

over 2 years ago

0 Kuno Wu over 2 years ago

TI__Mastermind 18556 points

HI Tsuji-san,

We don't hear about this application before, but from the datasheet, the Vin current is very small, so it should be ok, let me have a test for you, I will reply to you tomorrow.

Best Regards,

Kuno

+1 Kuno Wu over 2 years ago in reply to Kuno Wu

TI__Mastermind 18556 points

Hi Tsuji-san,

It should be ok, I find our EVM also use the 5V to generate 3.3V.(top resistance 1Kohm, bottom resistance 2kohm). Sorry, I didn't check EVM yesterday.