Other Parts Discussed in Thread: TPS3808
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?
* 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