Evaluation and Development Board Manual
www.onsemi.com
16
• VDDRF
•VPP
3.9.2 QFN Power Supplies
The external power supplies available for QFN boards are:
• VBUS, 5 V from USB connection — available only when USB is plugged in
• V3.3, 3.3 V from LDO — available when regulated supply is selected
•VEXT, (
P5 header) unregulated external supply — available when unregulated supply is selected
• Battery (J5 Battery Holder, 12 mm coin cell battery)
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