Doubts about TUSB3410UARTPDK

JFK

Other Parts Discussed in Thread: TUSB3410, TUSB3410UARTPDK

Hi,

I'm not getting the voltage of 1.8V at the pin VDD1V8 of the TUSB3410. I'm using the TPS79501 regulator instead of TSP76933. Before divider voltage I get voltage of 3.3V, but after the resistor R1 as the voltage was 0.61V. The resistors R1 and R2 are not very high allowing the passage of small current?

Regards

over 14 years ago

0 JMMN over 14 years ago

TI__Guru 60870 points

Hi,

What values are being used for R1 and R2 for the 3.3V to 1.8V voltage divider? Can you confirm that the correct resistor v alues are installed on the board?

Regards,

Julie Nirchi

0 JFK over 14 years ago in reply to JMMN

Prodigy 240 points

Hi Julie,

I'm using the resistor R1 = 90.9 k and R2 = 100k used in TUSB3410UARTPDK.

Regards,

Jun Fernando Kato

0 JMMN over 14 years ago in reply to JFK

TI__Guru 60870 points

Hi,

Are you seeing this issue on multiple boards? It sounds like there may be a short or some other issue on this particular system because the schematics look correct.

Regards,

Julie Nirchi

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Doubts about TUSB3410UARTPDK