SMARTRF06 Datasheet, PDF (16/45 Pages) Texas Instruments – SmartRF06 Evaluation Board

User’s Guide
SWRU321A – May 2013
Figure 10 – SmartRF06EB power source selection switch (P502) in “BAT” position
6.2.3 External Power Supply
The SmartRF06EB can be powered using an external power supply. To power the mounted EM
and the EB peripherals using an external power supply, the power source selection switch (S502)
should be in “BAT” position (Figure 10 in section 6.2.2).
The external supply’s ground should be connected to the SmartRF06EB ground, e.g. to the
ground pad in the top left corner of the EB. Connect the positive supply connector to the external
power header J501 (Figure 11). The applied voltage must be in the range from 2.1 V to 3.6 V and
limited to max 1.5 A.
When powered by an external power supply, the EM power domain is by default regulated to
2.1 V. The voltage regulator may be bypassed by mounting a jumper on J502. See section 6.3.2
for more details.
There is a risk of damaging the onboard components if the applied voltage on the
external power connector/header is lower than -0.3 V or higher than 3.6 V
(combined absolute maximum ratings for onboard components). See section 5.1 for
further information.
Figure 11 – SmartRF06EB external power supply header (J501)
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