I'm planning to use the MCP1825 LDO regulator to be used with a 3.7V LiPo battery to power up a circuit with 3.3V requirement (microcontroller + ESP8266). However, I'm confused with which package to go with.
MCP1825 comes in a SOT223-3 and SOT223-5. The later offers two extra pins: Shutdown and Powergaurd. I'm not able to comprehend the datasheet as to why these two extra pins are provided.
Does it mean that once my battery voltage is below certain voltage (such as 2.7V), it will shutdown regulation and prevent over discharge? If yes, how do I set that limiting voltage? Should a SOT-233-3 package be sufficient to provide 3.3V regulated output?