상황
A drone requires reliable GPS positioning; this circuit powers the GNSS module from a 12V battery, provides an antenna connection, and ensures quick satellite reacquisition with a backup supply.
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01
LDO regulator for clean 3.3V supply
02
Schottky diode isolation for backup domain
03
Rechargeable backup battery on V_BCKP
Integrating a GNSS module into battery-powered drones or mobile platforms where low noise and fast time-to-first-fix are critical.