PF1510 taking power from VSYS?

[MT]

A customer wants to power some LEDs from VSYS.

1) Is it OK to do this?

2) I assume the max current they could take would be the current taken would be dictated by the current limit setting for the Front-end LDO minus the current taken from the LDO/Switchers on the PF1510.

Thanks

Mark

[reyes · Accepted solution]

Hi Mark,

Yes, you can power some LEDs from VSYS power rail from the PF1510.

You are correct, the max current they could take is dictated by the current limit setting for the Front-end LDO minus the current taken from the LDO/Switchers on the PF1510.

Regards,

Jose Reyes

[Sadatan123]

Also Can we connect 5V to Vin of PF1510 and use Vsys to power input of all the switchers and LDO of  PMIC and also use Vsys to provide some pull ups on the boards?