TPS2592BL: Latched response

Hi Roy,

Before I comment on your questions, I would like to let you know that this part is NOT recommended for new designs and  is replaced by TPS25923 which is an  EXACT EQUIVALENT in functionality and parametrics to TPS2592BL. You can also consider using our latest parts like TPS2595 which are more cost effective, smaller in size and have better performance. 

1. When voltage < Under voltage, does it has output voltage in output side? does it have delay for reponse?

• When voltage applied on Enable pin is less than EN Threshold voltage, falling the internal FET in turned OFF. There is no flow of current from VIN to OUT. The output voltage depends on the output capacitance and the load value. There can be  a small delay as mentioned in datasheet, tOFFdly = 0.4 us.

2. When voltage > Over voltage clamp, does it has output voltage in output side? does it have delay for reponse?

• When Input voltage > Over voltage threshold, (6.75 V) the device starts to regulate the  gate of the internal FET such that the output voltage is clamped to 6.1V (typical voltage). The output voltage is maintained at 6.1V as long as the temperature of the FET internal does not reach the Thermal shut down threshold. You can expect a few micro seconds of delay here.

3. When Io > Ilim, does it has output voltage in output side? does it have delay for reponse?

• When the device is in current limit mode, the output voltage is decided by the output resistance (Vout = Ilim x Rload). You can expect a few micro seconds of delay in current limit response time.

4. When Io > Ilim, how does current shut down? thermal shut down ?

• Please refer to section 9.3.6 in the datasheet for more clear explanation.