PGA305: Max current draw from DVDD

Gaurav Hirlekar

Part Number: PGA305

What is the maximum current that can be drawn from the DVDD regulator to power an external device?
I have a microcontroller that runs of 1.8V and uses 0.7mA. Using the internal DVDD regulator of the PGA305 would save me quite a bit of PCB space.

over 1 year ago

+1 Bob Benjamin over 1 year ago

TI__Guru** 113765 points

Hi Gaurav Hirlekar,

I understand the desire to want to use the DVDD as a power source, but it is not recommended. The DVDD regulator is designed for the the PGA305 itself and not designed to power other devices. The reason for the output pin is to be able to connect a required bypass capacitor on the DVDD supply. The DVDD output pin is not meant to supply other devices.

Best regards,

Bob B

0 Gaurav Hirlekar over 1 year ago in reply to Bob Benjamin

Prodigy 90 points

Dear Bob,

Thank you. We will go with an additional regulator.

Regards,
Gaurav.

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PGA305: Max current draw from DVDD