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PICKIT2 Current

Started by Colin G3YHV, Feb 08, 2021, 08:26 AM

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Colin G3YHV

I am using a PicKit2 to in circuit program a 18f26k22.
All works fine  -  also on the board is an AD9850 module that
draws about 100 mA. Its very useful to run the supply volts
to the board  from the PicKit2 , Does anybody know how much current
The PicKit can supply. The output voltage is variable so It must be via some regulator
in the device.
Colin

SebaG

From PICkit2 user's guide: "The USB port current limit is set to 100 mA. If the target plus the PICkit 2 exceed this
current limit, the USB port may turn off. The target may be powered externally if
more power is required".

Colin G3YHV

Thanks SebaG  -  I am running the pickit on its limit but it all seems ok  and cool!
Colin

towlerg

FWIW I've shot myself in the foot (sadly more than once) trying to use Pickit2/3 as a power supply. I know it is convenient but don't do it, all your hair will fall ou and you'll end up a jibbering wreck. Don't even rely on 100mA @ 5V. If possible power the curcuit independantly of the P2/3, it'll determine that target is running on local power. I seem to remember there was a thread on the old board.