TPL5111: TPL5111 doesn't work as expected.

Sunglin Chen

Part Number: TPL5111

Dear All,

I used a TPL5111 as a very low power timer to enable a LDO, but it worked correctly once only for power reset. The output signal of it is in the following. Does anyone know what's wrong with my circuit? Thank you.

Sunglin.

over 7 years ago

0 Rob Rodrigues over 7 years ago

TI__Mastermind 19780 points

Hi Sunglin,

Do you have a scope shot showing the pulse on the DONE pin? Net name is EN TC in your schematic.

Are you using this as a watchdog timer or is it OK that the LDO will be shut down after 2 seconds?

Best Regards,

Clock & timing

Clock & timing forum

TPL5111: TPL5111 doesn't work as expected.