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



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



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.