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mc34708 startup problem

Question asked by caohaifeng on Apr 14, 2013
Latest reply on Apr 15, 2013 by caohaifeng

  I have new problem when use MC34708. The schemetic of MC34708 is the same as QSB.

I have only soldered PMIC part on board, and I use wall power(5VDC) as input supply. The problem

is mc34708 can't output all regulator voltage. The voltage I have measured is followed.

内嵌图片 1

I am confused that it's like OFF mode, but VSRTC has cross the Maxim value.

This mc34708 has been damaged?( Once I have measured VSRTC is 1.2V)

And how can I make it at ON mode?

Regards,

 

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