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TPS73133-EP: can TPS73133 enable reverse current protection all conditions?

Max Han
Intellectual 2260 points
Part Number: TPS73133-EP

Hi

TPS73101 has reverse current when Vfb is more than 1V above VIN. its Vfb reference voltage is 1.2V, if TPS73101 is set to 3.3V.

so when input voltage is 0V and output is 3.3V, at this condition, Vfb is 1.2V, so Vfb is 1.2V higher than Vin, TPS73101 will has reverse current.

customer want to choose TPS73133, they want to check if TPS73133 has reverse current when input is 0V and output is 3.3V?

in customer's system, TPS73133 output is oring with another 3.3V power rail, so when TPS73133 input is 0V, its output is still 3.3V.