Arduino Mini Pro 5v 168 Current through Vcc or Raw

Hello,

I'm trying to power an Arduino Mini Pro (Atmega 168) through my 12v charger. The Project is planned to be powered by a battery at some point, so I'm aiming for a low power consumption. The 12v are currently converted to 5v by a dc-dc converter (LM2596) and then fed to the Vcc pin on the Mini Pro.
I can't quite understand why the mini Pro draws a current of about 10mA through the Vcc pin, but only 4mA through the Raw pin. (Both in sleep Mode)
Shouldn't it be drawing more Power through the Raw pin because it is connected to the onboard linear voltage regulator?

Thanks for your help.

Lucardic:
Hello,

I'm trying to power an Arduino Mini Pro (Atmega 168) through my 12v charger. The Project is planned to be powered by a battery at some point, so I'm aiming for a low power consumption. The 12v are currently converted to 5v by a dc-dc converter (LM2596) and then fed to the Vcc pin on the Mini Pro.
I can't quite understand why the mini Pro draws a current of about 10mA through the Vcc pin, but only 4mA through the Raw pin. (Both in sleep Mode)
Shouldn't it be drawing more Power through the Raw pin because it is connected to the onboard linear voltage regulator?

Thanks for your help.

So you are connecting 5V to the output pin of the Pro Minis regulator, when it has no input connected ?

Lucardic:
I can't quite understand why the mini Pro draws a current of about 10mA through the Vcc pin, but only 4mA through the Raw pin. (Both in sleep Mode)
Shouldn't it be drawing more Power through the Raw pin because it is connected to the onboard linear voltage regulator?

How did you measure that.
The linear regulator on the Pro Mini draws <100uA when the MCU is in sleep mode, and ~250uA when active.
An LM2696 has a minimum no-load current of 5mA. This DC/DC is a bad choice for battery powered sleep mode.
Leo..

I just tried to connect a 4.5V batterypack to my Arduino Mini Pro. It delivered the same results. ~9mA through the Vcc pin and ~3mA through the Raw pin. What am I doing wrong?