TPS92515: Voltage divider resistance for IADJ

Hello Dice-K,

Thank you for your question. Our engineer who typically works on this device is out, so can get back to you with more detailed information next week. In the meantime, 100kohm is the recommended resistance in the datasheet and will perform as expected. 

Best Regards,

Caroline

Hi Caroline,
Thank you for your reply.

I look forward to more detailed information next week.
Please also let me know the leakage current of the IADJ terminal to calculate the required current of the voltage dividing resistor.

Best regards,
Dice-K

Hello Dice-K,

We will also look into the leakage current and include it with the information next week.

Best Regards,

Caroline

Hello Dice-K,

The input is high impedance.  I have requested that information and will let you know when I get it.

Best Regards,

Hi Irwin,
Thank you for your reply.

Does very high impedance mean that the leakage current is extremely small?

Assuming that the total voltage dividing resistor is 150kΩ, VCC = 5V, so the current flowing through the resistor is as follows.

I = E/R = 5V/150kΩ = 33μA

Is the maximum leak current value considered to be less than 330nA, which is one-hundredth of 33μA?
If so, I think that 100kΩ is fine on the high voltage side of the voltage dividing resistor.

Best regards,
Dice-K