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TPS65051 LDO input, LDO output

Hello,

 

I have a question about the TPS65051 LDO output.

In case of power off there a phenomenon that the input voltage and output voltage of the LDO are reversed (input voltage < output voltage), is there any problem?

If there is a problem, is it better to insert a diode between the voltage input terminal (VIN_LDO3/4) and the voltage output terminal?

Please let me know if there is a recommended circuit.

 

Specifically, the output of VLDO3.

Input Voltage: 3.9V

Output Voltage: 1.3V

When  input voltage < output voltage, the enable pin has already dropped to 0V.

 

Best regards,

Kiyama Shuji