Hello,
I have a couple of questions related to the sequence of TPS22968. Those are related to http://e2e.ti.com/support/power_management/switches/f/949/t/376404.
1. I looked at the comments that TPS22968 can't turn on without VBIAS. Will the outputs VOUT1 and VOUT2 have some voltage at the following conditions? Note that the sequence of VBIAS, VIN1 or VIN2 isn't stable. I mean the case of which one comes first and the voltage level isn't sure.
- ON1 < 0.5V, ON2 < 0.5V (low level input)
- VBIAS=0V - 5V
- VIN1=0V - 3.3V, VIN2=0V - 3.3V
2. If the above conditions are no problem for VOUT1 and VOUT2, how can the customer find the information in the datasheet?
3. Under the low level input conditions (ON1 < 0.5V, ON2 < 0.5V), does QOD work with RPD=270ohm when VBIAS>=2.5V even if VIN1=VIN2=0V?
Best regards,
Yoshikazu Kawasaki