TS5A3160: Power leakage after switching

Stone,

When I set PIN6 in HIGH, pin4 output 3.6v(@40uA), but when I set PIN6 in low, pin4 output 0.9v(@40uA) .

In this case you are leaving pin 3 floating and I would expect there voltage on COM pin 4 due to the leakage current but not 40uA.

 

so , I link pin3 to GND, but when I set PIN6 in low, pin4 output 0v(@410uA) .

I expect the 0V since the pin3 is no longer floating but I do not expect 410uA

 

One thought might be that the FET between NO and COM is not completely turning off.  Do you know the voltage level on the C-sensor-V node when it is logic low?   

 

How are you measuring the current on COM pin? 

 

Thank you,

Adam

 

 

 

   

Adam,

Thank you very much for your reply and support.

To facilitate testing, I replaced the sensor directly with a resistor（R1：5.2K）

MCU is CC1310 , the power supply is 3.621 V.

The current measured is on R1.

The measurement results are as follows:

PIN6 is high(3.518v), PIN4 is 3.62V(@0.693mA) ,PIN3 is about 0.085V

PIN6 is Low(0.0001v), PIN4 is 1.246V(@0.238mA), PIN3 is 1.246V


I measured five circuit boards and the results were the same.

In addition, I only welded the TS5A3160 for test. The results were as above at the beginning, but the measured results were normal after some welding, which could be shut down normally without leakage of electricity.

I don't know why.

Best Regards,

Stone,