OLIMEX© 2012
OLinuXino User's Manual
5.3 Power supply circuit
The power supply circuit of OLinuXino-MINI allows flexible input supply from 6V to 16V direct
current. This means a wide range of power supplies, adapters, converters are applicable. The
maximum amperage the board can draw is 1A.
The board with the prebuilt software and SD card equipped consumes between 0.12A and 0.16A
while booting the Linux image. When no other peripherals are connected the board (except the SD
card) the typical consumption is 0.12A. With one flash memory stick the consumption raises to
0.16A.
When powered by the typical 3.7V battery the USB-hosts are disabled. The consumption when
Linux is running is around 0.75A.
The board can be powered either from the power jack or from the LIPO_BAT connector. Note that
since standard batteries can't provide the voltage needed for the board it is advisable to use the
power from the power jack. When you use the LIPO_BAT connector and a battery the chip
handling the Ethernet and the USB hosts is disabled. Also the power button has alternative function
when the board is powered by a battery – check 6.12.
If you have successfully powered the board the red PWR LED will turn on. Note that it is possible
to have the PWR LED on even if there isn't enough power for proper operation of the board and all
the peripherals currently connected.
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