ADAFRUIT DEBO BOOST 500 - Developer Boards - Powerboost 500 Charger, TPS61090
"This small format DC/DC boost converter module can be powered by any 3.7 V Li-Ion / LiPo battery and converts battery power to 5.2 V DC to keep your 5 V projects running.<br /><br /><ul type=""disc""><br /><li>with low-battery detection</li><li>charging current: max. 500 mA</li><li>2 A internal swi
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