TPS3306: Internal Resistor divider setting

Namita Pawar

Part Number: TPS3306

Hi,

I am using TPS3306 for monitoring 3.3V and 1.8V.

I am using external resistor divider at pin SENSE1(3.07V), and SENSE2(1.76V) to setup the threshold.

In the datasheet there are internal resistors R1, R2, R3 and R4 used at the non inverting terminal of internal comparators as shown below.I need to know the value of these internal resistors with tolerance

Please help with your input.

Thanks,

Namita

over 4 years ago

0 Ben C over 4 years ago

TI__Guru 56345 points

Hi Namita,

Based on the datasheet, you can calculate the total resistance seen at SENSE 1 and SENSE 2. This is what I was able to find:

Therefore, the resistance seen at:

SENSE1 is (6V / 5uA) = 1.2Mohms (typ)

SENSE2 is (6V / 6uA) = 1Mohms (typ)

I hope I have answered your question.

Ben

0 Namita Pawar over 4 years ago in reply to Ben C

Intellectual 660 points

Thank you Ben for your answer.

Can I get a SPICE model for TPS3306.

Thanks,

Namita

0 Ben C over 4 years ago in reply to Namita Pawar

TI__Guru 56345 points

Hi Namita,

Unfortunately, we do not have a spice model for that product.

Ben

+1 Ben C over 4 years ago in reply to Ben C

TI__Guru 56345 points

Hi Namita,

If there are no further questions, please click on "resolved" to close the thread. Thanks!

Ben

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TPS3306: Internal Resistor divider setting