Datasheet

Page 7
1. Power supply
You can supply power to the board with a Mini-B USB cable
provided in the package. On-board voltage regulators provide
the appropriate voltage levels to each component on the board.
Power LED (GREEN) will indicate the presence of power supply.
You can also power the board using a Li-Polymer battery, via on-
board battery connector. On-board battery charger circuit enables
you to charge the battery over USB connection. LED diode
(RED) will indicate when battery is charging. Charging current is
~300mA and charging voltage is 4.2V DC.
Battery power supply
USB
power supply
Figure 1-1: Connecting
USB power supply
Figure 1-2: Connecting
Li-Polymer battery
Some click boards need more current than the USB connection can supply. For 3.3V clicks, the upper limit is 750 mA; for 5V clicks,
it’s 500 mA. In those cases you would need to use the battery as the power supply, or the vsys pin on the side of the board.
NOTE