This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS3890: TPS389012 vs. TPS389001 -- Can voltage divider be used on Sense of both devices?

Part Number: TPS3890
Other Parts Discussed in Thread: TPS3808

Hi,

I have a design that is using the TPS389001 with the recommended voltage divider circuit on the SENSE pin to set the voltage threshold that I want to use.

Unfortunately, given current supply limitations, I cannot get the TPS389001 for a few months.  But, I see that there is stock on the TPS389012 right now.

Looking at the datasheet for the TPS3890, I don't see any significant differences between these two devices on recommended VDD levels, or the ISENSE curent draw at a given voltage level.  The block diagrams show an internal voltage divider on the TPS389012, but given that the thresholds are exactly the same, it must not be a very aggressive divider.

Is there any reason why I could not do a direct substitution of the TPS389012 for the TPS389001?

Configuration:

* VDD=3.3V

* SENSE=voltage divider designed to provide 1.157 volts at TPS3890 pin when monitored voltage level hits our min acceptable level (4V on VBUS),  47uA through divider from voltage supply to GND

Thanks,

Bill