G’day!
still troubleshooting my new DC and active antenna…
I need to know, please, are there any options, different from the microUSB socket, to feed the board with the 5V supply? I don’t trust uUSB connections.
What about the LIPO_BAT and CHG-IN connectors? What are they for?
I’m putting together a linear regulator based on LT1083 to supply the cleanest possible 5V from a 12V lead acid battery.
thanx
lm
CHG-IN can be used to power it. CHG-IN goes to an on-board regulator, and you can feed in 5-7V at the CHG-IN pin. There is a 0.5V drop at the regulator though, so best is to feed 5.5V. Try not to go too much higher than that as all that extra voltage is simply going to be dropped across the regulator and cause the regulator to heat up.
Also, it is very easy to connect things the wrong way (GND/CHG-IN reversed) and blow the board. So be extra careful.
OK, thanx I’ll keep that in mind for when I decide to start using CHG-IN… I’ll be able to feed it with 5.5-6.0V from the adjustable linear regulator.
oh, I assume that Positive is the pin with the square pad.
As for LIPO-BAT, there are photos showing a white and/or black connector (my DC has unpopulated hole), is it fair to guess that it can be used for a backup LiPo battery? Single 3.7V cell or two cells in series, 7.4V…?
regards,
lm
