User manual

USB PWR

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Hardware Description

2.4.1 Power From the LaunchPad or CC3100EMUBOOST

The most common scenario is to power the CC3100BOOST from the connected LaunchPad. In this case,

the LaunchPad provides 3.3 V to the BoosterPack for its operation (see Figure 4). In addition to the 3.3 V,

some LaunchPads provide a 5 V from the USB (see Figure 5), which is used to drive a 3.3 V LDO on the

BoosterPack. In case the LaunchPad is not able to provide the 5V (for e.g. the LaunchPad with only 20

pins), then the USB connector on the CC3100BOOST should be used to provide the LDO input as shown

below.

Figure 4. 3.3 V Power From MCU

Figure 5. Feed USB on the BoosterPack (if the LaunchPad cannot source 5 V on 20-pin connector)

SWRU371B–June 2014–Revised January 2015 CC3100 SimpleLink™ Wi-Fi

and IoT Solution BoosterPack Hardware

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