AnsweredAssumed Answered

USB regulator no 3.3v comes out from VOUT33

Question asked by Daniel Chai on Dec 4, 2013
Latest reply on Dec 5, 2013 by Daniel Chai

Hi,

 

I am testing the USB device function on our board which uses MK60FN1M0VLQ12.

The connection is

USB 2.0                MCU(has independent power supply)

VCC------------------ VREGIN

D+  ------------------  USB0_DP

D-   ------------------- USB0_DM

GND ----------------  GND

                          VOUT33(floating)

 

Now I measure the VREGIN, it is 5v. But when I measure the VOUT33, it is about 0.3V.

 

Any ideas about this?

 

 

Thank you.

 

-Daniel

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