RE: TPS 51125 failure

Ernest Zengo

Prodigy 25 points

Hi there my TPS 51125 test 3.3V LDO but read O.0v on 5.0V LDO any body with a clue why

zengo

over 14 years ago

0 Nancy Zhang over 14 years ago

TI__Mastermind 49470 points

Hi Zengo,

VREG3 and VREG5 are output pins. As long as you have Vin connected and EN0 is enabled. 3.3V and 5V should be on. Please ensure your schematic and PCB are correct.

Thanks,

Nancy

0 Ernest Zengo over 14 years ago in reply to Nancy Zhang

Prodigy 25 points

Thanks Nancy

I am trying EN 0, only 3.3 V coming out.

could it be that channel 5.0V demaged .

Nancy cancy can I have pin voltage on all pins before I i conclude it dead

Thanks

zengo

0 Nancy Zhang over 14 years ago in reply to Ernest Zengo

TI__Mastermind 49470 points

Hi Zengo,

It is likely dead if only 3.3V comes up. What do you find?

Thanks,

Nancy

Power management

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RE: TPS 51125 failure