TPS7B7702-Q1: Hysteresis, current-sense fault condition, ERR output low test condition, Short-to-battery condition

Hi Oliver, 

Q1: The device should turn on above 4.4V because it has 0.4V hysteresis. But in TINA simulation it turned on at 4.5V. Could you explain why there is 0.1V voltage gap?

This is a typical specification without min and max spec, it's normal to have a unit-to-unit variation. This is also true for TINA model. 

Q2: Which pin 'current-sense fault condition current' flows? Sense pin? then, it's too high. 

Yes, it's for the sense pin. This charging current would stop once it reaches certain levels. Why do you think it's too high?

Q3: Which pin is the I_sink=5mA flowing? Could you explain about the test condition?

The I_sink is flowing into the /ERROR pin as it's an open-drain output. /ERROR pin is an open drain output and it's controller by internal logic; when the device tries to pull this pin down. When this pin is low and there is a 5mA current flowing into this pin, the voltage on this pin is lower than 0.4V. 

Q4: Is there any method for TPS7B7702-Q1 to check short-to-battery when it doesn't go over threshold voltage?

Will you help me to understand which threshold voltage are you referring to?

Regards, 
Jason Song